In 2005 DeWitt composed the score for New York Times Critic's Pick Dance Party USA and in 2007 he scored Quiet City, which was also a NY Times Critic's Pick and Independent Spirit Awards nominee. DeWitt completed the score for Cold Weather, which premiered at the 2010 South by Southwest film festival and was bought and released by IFC Films. He also took part in the 2013 Sundance Film Festival with two films. The first was a documentary titled The Good Life , directed by Sean Fine and his wife Andrea Nix-Fine. The second was a narrative film titled This Is Martin Bonner, directed by close friend Chad Hartigan. He has also done commercial work for Facebook, Merrell, Lincoln, Amtrak, Country Time Lemonade, Save The Children and others. He is also known in cycling world for his scores of the viral Rapha Cycling videos. Often collaborators include: Barry Jenkins, Aaron Katz, Chad Hartigan, Alex Ross Perry, Sean Fine, Brett Haley, Rapha and others. In 2013, DeWitt composed the score for Academy Award-winning documentary short film Inocente, directed by Sean & Andrea Fine. In the same year he would also attend the Sundance Film Festival with 2 films. The first, This is Martin Bonner by Chad Hartigan, was the winner of the NEXT Audience Award, and the second Life According To Sam was produced in conjunction with HBO to air in the fall of '13. 2014 saw DeWitt taking two films to Sundance for a second year in a row. The first, Land Ho! reunited him with close friend and director Aaron Katz, alongside Pilgrim Song director Martha Stephens. The second, Listen Up Philip, teamed him with director Alex Ross Perry and producers Washington Square Films and Sailor Bear, the latter composed of David Lowery and the team behind 2013 Sundance stand-out Ain't Them Bodies Saints. DeWitt premiered two films at the 2015 Sundance Film Festival: Unexpected, which was then released on July 24, 2015, in a limited release and through video on demand by The Film Arcade and I'll See You in My Dreams. He also premiered his second collaboration with Alex Ross Perry, Queen of Earth, at the 2015 Berlin Film Festival. In 2016 he composed the soundtrack for the 2017 movie The Hero starring Sam Elliott, Laura Prepon, Nick Offerman and Katharine Ross.
Recording career
Most recently, DeWitt has teamed with fellow Nashville, TN artist Jeremy Bullock to form Wild Cub. They released their debut 13-song full length LP in August 2013 entitled "Youth". Their sophomore 11-song LP "Closer" was released in 2017. Wild Cub has been part of SXSW, Bonnaroo, CMJ and other prominent festivals and has received coverage from PASTE, MTVHive.com, Wall Street Journal, SPIN, IFC.com, RCRDLBL, The Line of Best Fit, Clash Music and more. While working as an actor and composer in New York, DeWitt also began working as a performing songwriter in New York's Lower East Side. During this time he was developing demos and recording regularly with Roman Candle, a band featuring his sister Timshel, as well as her husband Skip Matheny and his younger brother Logan Matheny on drums. In 2010, Keegan released Nothing Shows under the Daytrotter label. Paste named him one of the 10 best solo artists of 2010 as well as Best of What's Next. Keegan's "Two Hearts" is the theme song to MTV's Friendzone series He has songs featured in How I Met Your Mother, Hart of Dixie, and Revenge as a solo artist. His song "Say La La" was featured on a JC Penney and Joe Fresh ad during the 2013 Oscars telecast. He also composed the score for Facebook Watch original series “Sorry for Your Loss”.