As the record producer, guest host Christopher Walken regularly pauses the band's recording session to give a very specific note: he's simply gotta have more cowbell. Fictional cowbell player Gene ...

I went to see him backstage, and he’s like, ‘You know, you’ve ruined my life… every show, people bring cowbells for the ...

Fred Armisen, Chris Parnell, Dave Grohl, Josh Homme, and more share their thoughts on the percussionist's mysterious fate.