Music Sales Notecracker Vocal Warm-Ups, Notecracker Vocal Warm-Ups, These pocket-sized swatch-packs are great for quick reference at home or on the go, Each Notecracker contains 70 handy reference cards, printed on both sides for quick access to chord diagrams, general music theory, jokes, quotes and snippets of musical trivia, Notecracker Vocal Warm-Ups is a selection of easy Vocal warm-ups, for all Voices, English language