Like David Crosby and Tom Selleck, rock singer Burton Cummings of the Guess Who is a noted mustache. The Guess Who? you ask.

Randy Bachman and Burton Cummings — founding guitarist and classic-era singer of the Guess Who ... His Absence on Tour Vote for the Best Album of the ’80s: Only the ‘Elite 8′ Remain!

He recently sent fans into a frenzy by hinting he might be ready to release his hotly-anticipated next album. And fans are ... But can you guess who they are? It's... Ed Sheeran and Jimmy Fallon!