Tagged Hal Leonard Essential Elements 2000, Book 1 (Piano Accompaniment) Concert Band Method. Essential Elements 2000. Instruction. Accompaniment book (softcover). 132 pages. Published by Hal Leonard (HL.862584). Hal Leonard More info: Essential Elements 2000, Book 1 (Piano Accompaniment)… Essential Elements 2000, Book 1 (Piano Accompaniment)… #13514ei