"Pocket Change is a lively feature piece for Solo Bass Trombone and Solo Contra-Bass Tuba accompanied by 8 Trombone and Drums. (Solo Bass Tuba can be substituted for the Solo Bass Trombone). The title refers to the jazz player's term "in the pocket". Itwas commissioned by Portuguese Tuba virtuoso Sergio Carolino and was premiered by him with his Porto Symphony colleague Bass Trombonist, Nuno Martens and the Wild Bones Gang --August 26, 2014 at GRAVISSIMO!, the Alcoba‡a International Low Brass Academy &Festival in Portugal." - Jim Self