McFerrin

Imperial College Chamber Choir, Catherine James, Iona Biggart, Daniel Kaupa, Patrick Allies

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

Sol3 Mio, Pene Pati (vocalist, percussion), Amitai Pati (vocalist, acousticguitar), Moses Mackay (vocalist, doublebass, acousticguitar, piano, ukulele), Forrest Thorpe (trumpet), Nic Manders (piano)

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

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

Peter Breiner (piano)

Peter Breiner and his Symphonic Pop Orchestra

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

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

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

One Voice Mixed Chorus, Jane Ramseyer Miller

Turtle Creek Chorale, Dr. Timothy Seelig