In addition to his solo work, Knaak became an in-demand sideman and session player in the Austin scene for a diverse array of artists such as Pauline Reese, Jon Wolfe, Melissa Sellers, Jane Bond, Royal Southern Brotherhood, Jake Lloyd, Kacy Crowley, Liars & Saints (a supergroup featuring Kacy Crowley, Johnny Goudie and Jeremy Nail), Alpha Rev, The Statesboro Revue, Ernie Durawa of the Texas Tornados, and spoken word poet B. Harold Benton.