Stevie Wonder, Bill Withers, Richie Havens, Nina Simone, Whitney Houston, Dee Dee Bridgewater, Kelis, Earth Wind, Fire, Parliament, Prince, Chic, A Tribe Called Quest, Al Green, Lyle Lovett

Ann-Margret & Tina Turner, Stevie Ray Vaughan, Maria McKee, David Sanborn & Van Dyke Parks, Jeff Beck & Beth Hart , The Corrs & Bono, Sting & Cheb Mami, Milva & Aaron Neville, George Duke & Anita Baker, Elis Regina & Michel Legrand, John Hiatt & Lyle Lovett, Roger Miller & Danny Gatton, Yo-Yo Ma & T. M. Krishna, Michael Hutchence & Ray Charles

George Benson, Isaac Hayes, Caetano Veloso, Paul Simon, Ibrahim Ferrer, Al Jarreau, Jamie Cullum, Anthony Hamilton, Arlo Guthrie, Lyle Lovett, David Bromberg, Joe Jackson

Tom Waits, Lyle Lovett , Chris Martin, Lionel Richie, Kenny Loggins, Jim Messina, Jack White, D'Angelo, Anthony Kiedis, Wilko Johnson, Roger Daltrey, Chico Buarque, Edu Lobo, Chris Hillman, David Crosby, Roger McGuinn, Sananda Maitreya

Snoop Dogg & Charlie Wilson, Rick James & The Temptations, Steve Winwood & Stevie Wonder, Carole King & James Taylor, Fergie & Debbie Harry, Bono & Kylie Minogue, Eric Burdon & War, Madonna & Anthony Kiedis, Sheryl Crow & Lyle Lovett, Ben Harper & Ellen Harper, Van Morrison & Chet Baker, Pat Metheny & Antonio Carlos Jobim

This day (April 13, 1946), in Forrest City, Arkansas, is born Albert Greene a.k.a. Al Green, an American gospel and soul music singer.

This day (April 29, 1933), in Abbott, Texas, U.S., is born Willie Hugh Nelson a.k.a Willie Nelson, American singer, songwriter and activist…