Rafael Bernardo Gayol is best known for his collaboration with singer-songwriter Leonard Cohen, and with such diverse artists as Charlie Sexton, BoDeans, Robbie Robertson, A-ha,Shawn Colvin, Bob Schneider, Tito & Tarantula, Billy Harvey, Robert Rodriguez, Patty Griffin, David Rice, Joe Ely, Kelly Willis, Bruce Robison, Tish Hinojosa, Jon Dee Graham, The Flatlanders, Eliza Gilkyson, Patricia Vonne,Scott Gibson, Tonio K, Bascom Hill, Mason Ruffner, Trish Murphy, Michael Thomas, Maggie Walters and Doll Congress.