Jazz Ensemble Jazz Ensemble - Level 1 - Digital Download SKU: A0.1277134 By Eric O'Reilly. By Eric O'Reilly. Arranged by Eric O'Reilly. Blues,Contest,Festival,Instructional,Jazz,Ragtime. Score and Parts. 47 pages. Eric O'Reilly #868821. Published by Eric O'Reilly (A0.1277134). I Sleep In The Key Of Bb, composed and perfomed by Eric O'Reilly, is a fun and easy song written for a middle school or high school jazz band. It is perfect for teaching students how to solo as it is filled with many opportunities for a multitude of players. Best for beginner and intermediate bands. Included with this purchase are the following instruments:Full ScoreAlto SaxophoneTenor SaxophoneBaritone SaxophoneTrumpetTromboneDrumsetBass GuitarPiano.