De tots els instruments possibles, cap no té la versatilitat i la capacitat d'emocionar de la veu humana. Repesquem cançons originals interpretades a cappella. 01 Janis Joplin - "Mercedes Benz" 02 The Beach Boys - "Our prayer" 03 The Beach Boys - "Wouldn't it be nice" 04 The Beatles - "Because" 05 Bobby McFerrin - "Don't worry, be happy" 06 Solomon Linda - "Mbube" 07 Paul Simon - "Homeless" 08 The Flying Pickets - "Only you" 09 Tracy Chapman - "Behind the wall" 10 The Housemartins - "Caravan of love" 11 Crosby & Nash - "To the last whale" 12 Destiny's Child - "Carol of the bells" 13 Emmylou Harris, Alison Krauss and Gillian Welch - "Didn't leave nobody but the baby" 14 Todd Rungren - "Pretending to care" 15 She and Him - "If you can't sleep" 16 Frank Sinatra - "Beautiful morning"