HeadCount Events & Concerts

Volunteer at a show!

To login or sign up to volunteer at HeadCount events & concerts, please visit our Volunteer Page.

Or you can sign up for a show directly if you already have an Intranet account and are logged in. Just click “Volunteer!” next to the show’s listing. Shows in italics and grey are not yet confirmed.

Filter shows by state, artist, venue, or metro area:

Date Artist Venue Location Take Action
07/27/2016 Floydfest Blue Ridge Parkway Floyd, VA
07/27/2016 Dave Matthews Band MidFlorida Credit Union Ampitheatre Tampa, FL
07/27/2016 Borns First Avenue Minneapolis, MN
07/27/2016 Dead & Company Sleep Train Amphitheatre Chula Vista, CA
07/27/2016 Modest Mouse The Forum Los Angeles , CA
07/27/2016 Vans Warped Tour Hollywood Casino Amphitheater Maryland Heights, MO
07/27/2016 Amanda Palmer Coney Island Amphitheater Brooklyn, NY
07/27/2016 Indigo Girls Crossroads Kansas City, MO
07/27/2016 BAIO Terminal West Atlanta, GA
07/28/2016 Borns Madrid Theatre Kansas City, MO
07/28/2016 The Avett Brothers Red Rocks Amphitheater Morrison, CO
07/28/2016 Modest Mouse Greek Theater Berkeley, CA
07/28/2016 Lucius St. Andrews Hall Detroit, MI
07/28/2016 Vans Warped Tour Providence Medical Center Amphitheater Bonner Springs, KS
07/28/2016 The Wood Brothers Peace Center Greenville, SC
07/28/2016 Rocket from the Crypt Irving Plaza New York, NY
07/28/2016 Gregory Porter Celebrate Brooklyn Brooklyn , NY
07/29/2016 Lollapalooza Grant Park Chicago, IL
07/29/2016 Bass Center Dick's Sporting Goods Park Commerce City, CO
07/29/2016 Dave Matthews Band Perfect Vodka Ampitheatre West Palm Beach, FL
07/29/2016 Borns MacAllister Amphitheater Indianapolis, IN
07/29/2016 Slightly Stoopid Portsmouth Pavilion Portsmouth, VA
07/29/2016 Dead & Company Toyota Amphitheatre Wheatland, CA
07/29/2016 Tedeschi Trucks Band The Rose Music Center at The Heights Huber Heights, OH
07/29/2016 RockyGrass Festival Planet Bluegrass Ranch Lyons, CO
07/29/2016 311 Tabernacle Atlanta, GA
07/30/2016 Dave Matthews Band Perfect Vodka Ampitheatre West Palm Beach, FL
07/30/2016 Slightly Stoopid Red Hat Amphitheater Raleigh, NC
07/30/2016 The Avett Brothers Red Rocks Amphitheater Morrison, CO
07/30/2016 Dead & Company Shoreline Amphitheater Mountain View, CA
07/30/2016 Modest Mouse KeyArena at Seattle Center Seattle, WA
07/30/2016 Stooges Brass Band Brooklyn Bowl Brooklyn, NY
07/30/2016 Vans Warped Tour Utah State Fairpark Salt Lake City, UT
07/30/2016 Unknown Mortal Orchestra Summer Stage New York, NY
07/30/2016 Festival at the Farm Prowse Farm Canton, MA
07/31/2016 Slightly Stoopid Riverfront Park North Charleston, SC
07/31/2016 The National Red Rocks Amphitheater Morrison, CO
07/31/2016 Modest Mouse Moda Center Portland, OR
07/31/2016 Dark Star Orchestra Coney Island Amphitheater Brooklyn, NY
07/31/2016 Vans Warped Tour Pepsi Center Denver, CO
07/31/2016 Tedeschi Trucks Band Freedom Hill Amphitheatre Sterling Heights, MI
07/31/2016 Julion Alvarez Eaglebank Arena Fairfax, VA
07/31/2016 Boris Orange Peel Asheville, NC
08/01/2016 Vans Warped Tour Balloon Fiesta Park Albuquerque, NM
08/02/2016 Dark Star Orchestra BB&T Ballpark Charlotte Charlotte, NC
08/02/2016 Tedeschi Trucks Band Bradly Theater Tulsa, OK
08/02/2016 Langhorne Slim & the Law Brooklyn Bowl Brooklyn, NY
08/03/2016 Umphrey's McGee Crossroads Kansas City, MO
08/03/2016 Michael Franti Pacific Amphitheatre Costa Mesa, CA
08/03/2016 Beerocracy #2 feat. Silverback Colony 612 Brew Minneapolis, MN
08/04/2016 Leftover Salmon Count Basie Theater Red Bank , NJ
08/04/2016 Dark Star Orchestra Heritage Amphitheater at Pocahontas State Park Chesterfield, VA
08/04/2016 Vans Warped Tour Phoenix Event Complex Phoenix, AZ
08/04/2016 Dumpstaphunk Brooklyn Bowl Brooklyn, NY
08/05/2016 Tedeschi Trucks Band Red Rocks Amphitheater Morrison, CO
08/05/2016 Outside Lands Golden Gate Park San Francisco, CA
08/05/2016 Arise Music Festival Sunrise Ranch Loveland, CO
08/05/2016 Dixie Chicks Gexa Energy Pavilion Dallas, TX
08/05/2016 Umphrey's McGee Farm Bureau Insurance Lawn Indianapolis , IN
08/05/2016 Vans Warped Tour Qualcomm Stadium at Jack Murphy Field San Diego, CA
08/05/2016 Keller Williams Brooklyn Arts Center Wilmington, NC
08/05/2016 Michael Franti Pepsi Amphitheater Flagstaff, AZ
08/05/2016 Vertex Festival Cottonwood Meadows Buena Vista, CO
08/06/2016 Slightly Stoopid Red Rocks Amphitheater Morrison, CO
08/06/2016 Dixie Chicks Cynthia Woods Pavilion The Woodlands, TX
08/06/2016 Downtown Farmer's Market Downtown Asheville Asheville, NC
08/06/2016 Moonrise Festival Pimlico Race Course Baltimore, MD
08/06/2016 Dark Star Orchestra Pisgah Brewery Black Mountain, NC
08/06/2016 OAR Coney Island Amphitheater Brooklyn, NY
08/06/2016 Vans Warped Tour Shoreline Amphitheater Mountain View, CA
08/06/2016 Tedeschi Trucks Band Red Butte Garden Amphitheater Salt Lake City, UT
08/06/2016 Summer Spirit Festival Day 1 Merriweather Post Pavilion Columbia, MD
08/06/2016 Hot Tuna Capitol Theatre Port Chester, NY
08/07/2016 Dixie Chicks Austin360 Amphitheater Austin, TX
08/07/2016 Vans Warped Tour Pomona Fairplex Los Angeles, CA
08/07/2016 Michael Franti Red Rocks Amphitheater Morrison, CO
08/07/2016 Summer Spirit Festival Day 2 Merriweather Post Pavilion Columbia, MD
08/09/2016 Vans Warped Tour Hard Rock Hotel & Casino Las Vegas, NV
08/09/2016 Michael Franti Red Butte Garden Amphitheater Salt Lake City, UT
08/10/2016 Dixie Chicks Veterans United Home Loans Amphitheater Virgina Beach, VA
08/10/2016 Jackson Browne McMenamins Edgefield Portland, OR
08/10/2016 Dr. Dog 9:30 Club Washington, DC
08/10/2016 Labyrinth Celebrate Brooklyn Brooklyn , NY
08/11/2016 The Peach Music Festival The Pavilion at Montage Mountain Scranton, PA
08/11/2016 Trampled by Turtles Red Rocks Amphitheater Morrison, CO
08/11/2016 Vans Warped Tour Ford Idaho Center Boise, ID
08/11/2016 Dr. Dog 9:30 Club Washington, DC
08/11/2016 Indigo Girls Fonda Theatre Los Angeles, CA
08/12/2016 Dixie Chicks Walnut Creek Amphitheatre Raleigh, NC
08/12/2016 Goo Goo Dolls Nikon at Jones Beach Wantagh , NY
08/12/2016 Umphrey's McGee Blue Hills Bank Pavilion Boston, MA
08/12/2016 The Avett Brothers Portsmouth Pavilion Portsmouth, VA
08/12/2016 Vans Warped Tour White River Amphitheater Seattle, WA
08/12/2016 Museum After Dark New Britain Museum of American Art New Britain, CT
08/12/2016 Jackson Browne Chateau Ste. Michelle Woodinville , WA
08/12/2016 Dr. Dog Celebrate Brooklyn Brooklyn , NY
08/12/2016 Indigo Girls Humphreys Concerts by the Bay San Diego, CA
08/12/2016 Michael Franti McMenamins Edgefield Portland, OR
08/13/2016 Trampled by Turtles Big Sky Brewery Missoula, MT, MT
08/13/2016 Dixie Chicks PNC Music Pavilion Charlotte, NC
08/13/2016 The Avett Brothers Coney Island Amphitheater Brooklyn, NY
08/13/2016 Jackson Browne Chateau Ste. Michelle Woodinville , WA
08/13/2016 Collie Buddz Shakas Virginia Beach, VA
08/13/2016 Vans Warped Tour Portland Expo Center Portland, OR
08/13/2016 Dr. Dog Lowell Summer Music Series Lowell, MA
08/13/2016 Gov't Mule Blue Hills Bank Pavilion Boston, MA
08/13/2016 String Cheese Incident Kings Theatre Brooklyn NY, NY
08/13/2016 X Irving Plaza New York, NY
08/13/2016 Andra Day Celebrate Brooklyn Brooklyn , NY
08/14/2016 Slightly Stoopid Vinoy Park St. Petersburg, FL
08/14/2016 Dixie Chicks Verizon Wireless Amphitheater Alpharetta, GA
08/14/2016 Bayside Amos Southend Charlotte, NC
08/14/2016 String Cheese Incident Kings Theatre Brooklyn NY, NY
08/15/2016 Trampled by Turtles The Complex Salt Lake City, UT
08/16/2016 Bayside Norva Norfolk, VA
08/16/2016 Michael Franti Big Sky Brewery Missoula, MT, MT
08/17/2016 Dixie Chicks Bridgestone Arena Nashville, TN
08/17/2016 Black Sabbath Nikon at Jones Beach Wantagh , NY
08/17/2016 Bayside Ramshead Live Baltimore, MD
08/17/2016 Gov't Mule River Stage Philadelphia, PA
08/18/2016 Slightly Stoopid Blue Hills Bank Pavilion Boston, MA
08/18/2016 JJ Grey & Mofro Greenfield Lake Amphitheater Wilmington, NC
08/18/2016 Disco Biscuits Irving Plaza New York, NY
08/18/2016 Anders Osborne The Warehouse Fairfield, CT
08/18/2016 ALO Brooklyn Bowl Brooklyn, NY
08/18/2016 Bayside Electric Factory Philadelphia, PA
08/18/2016 Gov't Mule Stage AE Pittsburgh, PA
08/19/2016 Slightly Stoopid Stone Pony Summer Stage Asbury Park, NJ
08/19/2016 Dixie Chicks MidFlorida Credit Union Ampitheatre Tampa, FL
08/19/2016 Street Food Gathering Downtown Huntsville Huntsville, AL
08/19/2016 Grace Potter Red Rocks Amphitheater Morrison, CO
08/19/2016 Disco Biscuits Irving Plaza New York, NY
08/19/2016 Old Dominion Greenfield Lake Amphitheater Wilmington, NC
08/19/2016 Prophets of Rage Eaglebank Arena Fairfax, VA
08/19/2016 Bayside Playstation Theatre New York, NY
08/20/2016 Donavan Frankenreiter Greenfield Lake Amphitheater Wilmington, NC
08/20/2016 Hot August Music Festival Oregon Ridge Park Cockeysville, MD
08/20/2016 Slightly Stoopid Penn's Landing Philadelphia, PA
08/20/2016 Trampled by Turtles Oregon Zoo Amphitheater Portland, OR
08/20/2016 Dixie Chicks Perfect Vodka Ampitheatre West Palm Beach, FL
08/20/2016 Disco Biscuits Coney Island Amphitheater Brooklyn, NY
08/20/2016 Umphrey's McGee Ascend Amphitheater Nashville, TN
08/20/2016 Virginia Craft Brewers Fest Devil's Backbone Brewery Roseland, VA
08/20/2016 Butch Walker Tabernacle Atlanta, GA
08/21/2016 Nathaniel Rateliff Red Rocks Amphitheater Morrison, CO
08/21/2016 Bayside House of Blues Boston, MA
08/22/2016 Jackson Browne Red Rocks Amphitheater Morrison, CO
08/23/2016 Donavan Frankenreiter Shakas Virginia Beach, VA
08/23/2016 UB40 Terminal 5 New York, NY
08/24/2016 Dixie Chicks Hollywood Casino Amphitheater Maryland Heights, MO
08/24/2016 Jackson Browne Red Butte Garden Amphitheater Salt Lake City, UT
08/24/2016 Bayside Agora Theater Cleveland, OH, OH
08/24/2016 Toots & the The Maytals Higher Ground Ballroom Burlington, VT
08/25/2016 Lockn' Oak Ridge Farm Arrington, VA
08/25/2016 Slightly Stoopid Cabooze Minneapolis, MN
08/25/2016 Dixie Chicks Klipsch Music Center Noblesville, IN
08/25/2016 Gov't Mule Red Rocks Amphitheater Morrison, CO
08/26/2016 Dave Matthews Band Sleep Train Amphitheatre Chula Vista, CA
08/26/2016 moe. Boulder Theater Boulder, CO
08/26/2016 Amanda Palmer Blue Hills Bank Pavilion Boston, MA
08/26/2016 Babe Fest Asbury Hall Buffalo, NY
08/26/2016 Bayside Majestic Theatre Detroit, MI
08/26/2016 The Revivalists Peace Center Greenville, SC
08/26/2016 STS9 Tabernacle Atlanta, GA
08/27/2016 Dave Matthews Band Irvine Meadows Amiptheatre Irvine, CA
08/27/2016 Slightly Stoopid Jacobs Pavilion Cleveland, OH
08/27/2016 Dixie Chicks Minnesota State Fair St. Paul, MN
08/27/2016 AFROPUNK Commodore Barry Park Brooklyn, NY
08/27/2016 The Wood Brothers Pisgah Brewery Black Mountain, NC
08/27/2016 Michael Franti Rialto Theater Tuscon, AZ
08/27/2016 Dick Dale Brooklyn Bowl Brooklyn, NY
08/28/2016 Dixie Chicks Minnesota State Fair St. Paul, MN
08/28/2016 Slightly Stoopid The Fillmore Detroit, MI
08/28/2016 The Head and The Heart Red Rocks Amphitheater Morrison, CO
08/28/2016 Bayside Mill City Nights Minneapolis, MN
08/29/2016 Dave Matthews Band Greek Theater Berkeley, CA
08/29/2016 Jackson Browne Humphreys Concerts by the Bay San Diego, CA
08/30/2016 Dave Matthews Band Greek Theater Berkeley, CA
08/30/2016 Dixie Chicks Sprint Center Kansas City, MO
08/30/2016 Claypool Lennon Delirium Irving Plaza New York, NY
08/30/2016 Jackson Browne Humphreys Concerts by the Bay San Diego, CA
08/30/2016 Bayside Ogden Theater Denver, CO
08/30/2016 Matisyahu Jefferson Theater Charlottesville, VA
08/31/2016 Bayside The Grand at The Complex Salt Lake City, UT
08/31/2016 Mac DeMarco Red Rocks Amphitheater Morrison, CO
09/01/2016 Dixie Chicks Fiddlers Green Amphitheatre Englewood, CO
09/01/2016 Rascal Flatts Nikon at Jones Beach Wantagh , NY
09/01/2016 Unknown Mortal Orchestra Santa Monica Pier Santa Monica, CA
09/02/2016 Dave Matthews Band George Ampitheatre George, WA
09/02/2016 Phish Dick's Sporting Goods Park Commerce City, CO
09/02/2016 Dixie Chicks USANA Ampitheater Salt Lake City , UT
09/02/2016 Atmosphere Red Rocks Amphitheater Morrison, CO
09/02/2016 Unknown Mortal Orchestra Greek Theater Berkeley, CA
09/02/2016 Andrew Bird The Wilma Missoula, MT
09/02/2016 Bayside The Showbox Seattle, WA
09/03/2016 Dave Matthews Band George Ampitheatre George, WA
09/03/2016 Phish Dick's Sporting Goods Park Commerce City, CO
09/03/2016 Unknown Mortal Orchestra Greek Theater Berkeley, CA
09/03/2016 Gov't Mule Big Sky Brewery Missoula, MT, MT
09/03/2016 Tedeschi Trucks Band Copley Symphony Hall San Diego, CA
09/03/2016 Made in America Benjamin Franklin Parkway Philadelphia, PA
09/03/2016 Bayside Hawthorne Theatre Portland, OR
09/04/2016 Dave Matthews Band George Ampitheatre George, WA
09/04/2016 Phish Dick's Sporting Goods Park Commerce City, CO
09/04/2016 Gregory Alan Isakov Red Rocks Amphitheater Morrison, CO
09/04/2016 OAR Ravinia Highland Park , IL
09/04/2016 Bayside Regency Center Grand Ballroom San Francisco, CA
09/06/2016 Andrew Bird Overture Center for the Arts Madison, WI
09/06/2016 Bayside The Observatory Santa Ana, CA
09/06/2016 Of Montreal Jefferson Theater Charlottesville, VA
09/06/2016 Flume Tabernacle Atlanta, GA
09/07/2016 Flume Tabernacle Atlanta, GA
09/07/2016 Ask Rayceen Show MLK Library Washington, DC
09/07/2016 Andrew Bird Jay Pritzker Pavilion Chicago, IL
09/07/2016 Bayside The Regent Theater Los Angeles, CA
09/08/2016 Tedeschi Trucks Band Fox Theater Oakland, CA
09/08/2016 Bayside North Park Theater San Diego, CA
09/08/2016 Indigo Girls Sea Island Resort Southern Grown Concert Series Sea Island, GA
09/08/2016 The Revivalists The Shelter Detroit, MI
09/08/2016 Bonnie Raitt Red Rocks Amphitheater Morrison, CO
09/09/2016 The Avett Brothers Express Live Columbus, OH
09/09/2016 Tedeschi Trucks Band Fox Theater Oakland, CA
09/09/2016 Dr. Dog Breese Steven Field Madison, WI, WI
09/09/2016 Gov't Mule Nikon at Jones Beach Wantagh , NY
09/09/2016 Twiddle College Street Music Hall New Haven, CT
09/09/2016 The Revivalists The Vogue Indianapolis, IN
09/09/2016 The Specials Terminal 5 New York, NY
09/09/2016 Little Feat Capitol Theatre Port Chester, NY
09/10/2016 Bayside Pressroom Phoenix, AZ
09/10/2016 Twiddle College Street Music Hall New Haven, CT
09/11/2016 Dinosaur Jr Orange Peel Asheville, NC
09/11/2016 Bonnie Raitt Red Butte Garden Amphitheater Salt Lake City, UT
09/12/2016 Andrew Bird Georgia Theater Athens, GA
09/12/2016 The Revivalists Beachland Ballroom Cleveland, OH
09/13/2016 Andrew Bird Orange Peel Asheville, NC
09/13/2016 Bayside The Aztec Theatre San Antonio, TX
09/13/2016 Death Cab for Cutie Revention Music Center Houston, TX
09/14/2016 Jason Isbell Red Rocks Amphitheater Morrison, CO
09/14/2016 Tedeschi Trucks Band McCaw Hall Seattle, WA
09/14/2016 Bayside House of Blues Houston, TX
09/14/2016 Chevelle Orange Peel Asheville, NC
09/14/2016 Death Cab for Cutie The Bomb Factory Dallas, TX
09/14/2016 Frightened Rabbit Jefferson Theater Charlottesville, VA
09/15/2016 Bayside Gas Monkey Live! Dallas, TX
09/15/2016 The Revivalists Pearl Street Night Club Northampton, MA
09/16/2016 Anders Osborne Red Rocks Amphitheater Morrison, CO
09/16/2016 Tedeschi Trucks Band Orpheum Theater Los Angeles, CA, CA
09/16/2016 Andrew Bird Murat Theater Indianapolis, IN
09/16/2016 Bayside Granada Lawrence, KS
09/16/2016 Tauk Brooklyn Bowl Brooklyn, NY
09/16/2016 The Revivalists Paradise Rock Club Boston, MA
09/16/2016 Bonnie Raitt Chateau Ste. Michelle Woodinville , WA
09/16/2016 Built to Spill Irving Plaza New York, NY
09/17/2016 Grand Point North Waterfront Park Burlington, VT
09/17/2016 Tedeschi Trucks Band Orpheum Theater Los Angeles, CA, CA
09/17/2016 Farm Aid Jiffy Lube Live Bristow, VA
09/17/2016 Bayside The Ready Room St. Louis, MO
09/17/2016 Dr. Dog Lindley Meadow at Golden Gate Park San Francisco, CA
09/18/2016 Ray LaMontagne Red Rocks Amphitheater Morrison, CO
09/20/2016 Lucius House of Blues Boston, MA
09/20/2016 Gov't Mule Starlight Theater Kansas City, MO
09/22/2016 Explosions in the Sky Terminal 5 New York, NY
09/23/2016 Catskill Chill New Minglewood Lakewood, PA
09/23/2016 Lucius Summer Stage New York, NY
09/23/2016 Gov't Mule Tabernacle Atlanta, GA
09/23/2016 Hometown Get Down Clarksburg, MD Baltimore, MD
09/23/2016 The Revivalists 9:30 Club Washington, DC
09/23/2016 Built to Spill Orange Peel Asheville, NC
09/23/2016 The Kills Terminal 5 New York, NY
09/24/2016 Pilgrimage Festival Day 1 The Park at Harlinsdale Farm Franklin, TN
09/24/2016 Gov't Mule Jannus Live St. Petersburg, FL
09/24/2016 Gojira Orange Peel Asheville, NC
09/25/2016 Gov't Mule Fillmore Miami, FL
09/25/2016 Pilgrimage Festival Day 2 The Park at Harlinsdale Farm Franklin, TN
09/26/2016 Brian Fallon & the Crowes Terminal 5 New York, NY
09/27/2016 Gov't Mule Avondale Brewing Company Birmingham, AL
09/27/2016 Jake Bugg Terminal 5 New York, NY
09/29/2016 Gov't Mule Innsbrook Pavilion Glen Allen, VA
09/29/2016 Hoopla Devil's Backbone Brewery Roseland, VA
09/30/2016 Austin City Limits (Weekend 1) Zilker Park Austin, TX
10/01/2016 Dr. Dog Tempe Beach Park Tempe, AZ
10/02/2016 Coheed and Cambria Orange Peel Asheville, NC
10/04/2016 Andrew Bird Saturn Birmingham, AL
10/04/2016 Anthrax Orange Peel Asheville, NC
10/05/2016 Ask Rayceen Show MLK Library Washington, DC
10/05/2016 Built to Spill Brooklyn Bowl Brooklyn, NY
10/06/2016 Andrew Bird The National Richmond, VA
10/07/2016 Austin City Limits (Weekend 2) Zilker Park Austin, TX
10/07/2016 Andrew Bird Ramshead Live Baltimore, MD
10/08/2016 Andrew Bird Byham Theater Pittsburgh, PA
10/08/2016 The Head and The Heart Greek Theater Berkeley, CA
10/08/2016 Funky Meters Capitol Theatre Port Chester, NY
10/09/2016 Van Morrison Forest Hills Tennis Stadium Forest Hills, NY
10/09/2016 The Wood Brothers Brooklyn Arts Center Wilmington, NC
10/10/2016 Dixie Chicks Hollywood Bowl Los Angeles, CA
10/10/2016 Andrew Bird Higher Ground Ballroom Burlington, VT
10/12/2016 Simple Plan Irving Plaza New York, NY
10/14/2016 Coheed and Cambria Capitol Theatre Port Chester, NY
10/15/2016 Beats Antique Irving Plaza New York, NY
10/17/2016 Die Antwoord Terminal 5 New York, NY
10/18/2016 Beats Antigue Jefferson Theater Charlottesville, VA
10/19/2016 The Revivalists Georgia Theater Athens, GA
10/20/2016 The Head and The Heart Terminal 5 New York, NY
10/22/2016 Shovels & Rope Jefferson Theater Charlottesville, VA
10/25/2016 Local Natives Terminal 5 New York, NY
10/26/2016 Local Natives Terminal 5 New York, NY
10/31/2016 The Revivalists Music Farm Charleston, SC
11/02/2016 Animal Collective Terminal 5 New York, NY
11/02/2016 The Revivalists Charlotte's Underground Charlotte, NC
11/03/2016 The Revivalists Lincoln Theater Raleigh, NC
12/01/2016 Fiona Apple - TEST Mulberry Mountain Ozark, AR