Hage Musikverlag 100 Leichte Duette Posaune, 100 Leichte Duette for 2 Posaunen, By Franz Kanefzky: A collection of 100 very easy to easy duets for 2 trombones, This book contains as well classical melodies as songs from all over the world,Evergreens and Christmas carols, These songs can be played in concerts and classes, The following editions of this series can be combined: trumpet (Bb),clarinet (Bb),alto saxophone (Eb) and trombone (C)