Ten Intermediate Duets for Two Tubas (Bass clef) Ten Intermediate Duets for two Tubas are a collection of 10 original duets written in variety of popular styles suitable for two tuba players of an intermediate standard. The ten duets in the book are: Overture Marcia Primo Marcia Secondo A Song Walt’s Waltz Copycats Intermezzo Staccato Stomp Dynamic Duo Swan Song