More than any other person, Deke Sharon is responsible for the current success of pop a cappella. Founder of the House Jacks (the original "rock band without instruments"), Deke continues to influence through his work with The Sing-Off, Pitch Perfect, Pitch Perfect 2, and Vocalosity. Combine Deke's expertise with that of directors Ben Spalding and Brody McDonald, add a foreword by Ben Folds, throw in advice from contributors like Peter Hollens, and you have one of the most comprehensive volumes ever created on the subject of contemporary a cappella singing.