Originally written for double bass, Vulcan's Forge by Seth Gamba features trios for the developing player that have been carefully adapted by the composer for any combination of trombone, euphonium, and tuba. They work great for a teacher and students, atrio of students, or a whole group of students doubling or tripling the parts. When preparing these pieces, it is suggested that students learn all parts together and then take turns playing each one. - the publisher