One way to prepare for the rigorous demands of choral singing is to begin rehearsal with a warm-up round. One Hundred Warm-Up Rounds for choirs aims to concentrate on some of the elements of good singing, providing material that will settle the voice through controlled breathing, open throats, clear vowel sounds & expressive phrasing. The rounds are based on easily memorable texts, with ranges that rarely exceed a tenth & in many cases stay within the octave.