The Oakland based Ton Trio is made up of Aram Shelton on alto saxophone and bass clarinet, Kurt Kottheimer on bass, and Sam Ospovat on drums. All three found their way to the San Francisco area after a time in the midwest, and each became active playing creative music shortly after their arrival. After playing separately in different contexts, Ton Trio formed in the summer of 2007. The music for this trio is written by Shelton. Some pieces use the melodic and rhythmic material in a more traditional head format while in others the parts are interchangebale and can be explored extensively by each player, with parts being rearranged simultaneously to create new harmonic relationships.