His extensive performing experience includes the Manchester Jazz and Blues Festival with the Toni Lynn Washington Band and the Boston Blues Festival with Joe Bargar and the Soul Providers, as well as with Sid Caesar, Floyd Dixon, Rita Moreno and Junior Watson. Poniatowski's recordings include Mississippi Moan with the Bruce Katz Band, More Than Live with Janiva Magness, The George Carlin Show soundtrack, Room for Two with April Hall, and a self-titled CD, The Mark Poniatowski Situation.