The Rubank Supplementary Studies book follows the Elementary Method, and includes a series of short etudes to help improve technique. 
 
The Flute one also works for Piccolo.
 
The Saxophone one works for all of them.
 
The Trumpet one also works for Cornet.
 
The Trombone one also works for Baritone. 
 
*If you don't see your instrument's book in stock, please call the store and we will custom order it for you.