Smash Mouth And Humperdink Jam

Southern California ska-rockers Smash Mouth were joined by lounge legend Engelbert Humperdink on an impromptu jam of the band's hit "Walking on the Sun" for a recent television appearance. Smash Mouth were taping a performance for gross-out magicians Penn and Teller's "Sin City" variety show when Humperdink sat in, according to Humperdink's publicist.