40 Rhythmical Studies. (Trombone (B.C.)). By Grover C. Yaus. Concert Band. For Trombone (B.C.). Band Supplement; Method/Instruction; Technique Musicianship. Book. 24 pages. Published by Alfred Music Publishing (AP.EL01318).
These 40 Rhythmical Studies in unison for band are based entirely on division of measure, with easy key signatures. They are filled with practical rhythms, in a style that makes division of measure interesting.