21st Century (2012). Bonnie & Slide for trombone duet and 8-part trombone choir (10 parts total). The duet parts are designated "1. Classical" and "2. Jazz." The writing between the two solo parts is not all that different except that the Jazz part includes some chord changes for improvisation, alone and also in counterpoint to the Classical line. Presumably the Classical part would be played on a symphonic horn and the Jazz part on a peashooter. Trombone choir proper is scored for 6 tenors and 2 basses. -cdp