Michael McDonald is an American singer, songwriter, and keyboardist known for his distinctive, soulful voice and smooth blend of rock, R&B, and pop. He gained fame as a member of Steely Dan and later as the lead vocalist for the Doobie Brothers in the late 1970s. McDonald also has a successful solo career and is known for his collaborations with many major artists. His music often features rich harmonies and emotionally expressive performances.