McFerrin

Charter Choir of Homerton College, Cambridge, Daniel Trocmé-Latter and Lorenzo Bennett

St. Olaf Choir, Anton Armstrong, St. Olaf Choir and Anton Armstrong featuring Charles Gray, St. Olaf Choir and Anton Armstrong featuring Emma Silvestri, Charles Gray, Emma Silvestri

Bobby McFerrin, Raz Kennedy, Rhiannon, Janis Siegal, David Worm, Pamela Warrick Smith, Paul Hillier, Sussan Deyhim, Beth Quist, Nick Bearde, Joey Blake, Pierre Cook, Kirsten Falke

Sol3 Mio, Amitai Pati (acoustic guitar), Moses Mackay (ukulele, piano, acoustic guitar, double bass), Pene Pati (percussion), Forrest Thorpe (trumpet), Nic Manders (piano)

Thomas Newman, Bobby McFerrin, T. Rex, Rick Riccio (whistle), Public Enemy

Peter Breiner (piano)

Peter Breiner and his Symphonic Pop Orchestra

Scott Test (piano), John Hunter II (drums)

Mansfield University Concert Choir, Mansfieldians, Christopher Starr, Briana Bailey, Peggy Dettwiler, Sheryl Monkelien

Justice, Curbi, Carl-Johan Sevedag, Jon Ekstrand, Fedde Le Grand vs Sultan & Ned Shepard, Sultan & Ned Shepard, Andreas Franck, Amok, Bobby McFerrin (vocals)

Massimo Faraò Trio, Nicola Barbon, Marco Tolotti, Bobo Facchinetti

Boston Gay Men's Chorus, Chad Weirick, Robert Barney