Sid McGinnis joined "Late Night with David Letterman" in 1984 as guest guitarist of the week and has remained as a permanent guitarist with Letterman ever since.

He has toured with Barry Manilow, Leonard Cohen, Peter Gabriel, Carly Simon, Paul Simon, and Laurie Anderson and recorded with such diverse artists as Dire Straits, Ashford & Simpson, David Lee Roth, Bob Dylan, and David Bowie.

McGinnis was born in Pittsburgh, and lives and rebuilds his guitar amplifiers in the New York area.