1972: (L-R) Patrick Simmons, Tiran Porter, John Hartman, Michael Hossack and Tom Johnston of the rock and roll band "The Doobie Brothers" pose for a portrait in 1972. (Photo by Michael Ochs Archives/Getty Images)
WHAT'S HAPPENING!! – "Doobie or Not Doobie" – Airdate: January 28, 1978. (Photo by ABC Photo Archives/Disney General Entertainment Content via Getty Images) MICHAEL MCDONALD OF THE DOOBIE BROTHERS