These duets are a fun way to improve both jazz and classical rhythms and phrasing. Their level is medium to difficult depending on the tempo. More advanced musicians can play them faster to work on speed and agility. However they also sound great at a slower tempo.
Composer Sandra Schlink has transposed these duets for several instruments, and all the books can be used together. For example, if you play the tuba and your friends play the trombone, they can buy Jazz & Classical Trombone Duets, Book 2. Then you can all play the corresponding musical piece together. We have this book for trumpet as well. Books are available for the trombone, trumpet, French horn, euphonium, tuba, flute, violin, viola and cello.