“Switch Up” was co-produced by the rapper’s sons, Skyler and Davis Diamond Mike D (Jack Coleman) Beastie Boys ’ Mike D has released “Switch Up,” his first song as a solo artist. The single is the first new music from any singular Beastie Boy since 2011’s Hot Sauce Committee Part Two . Check it out below. “Switch Up” began as an experiment in Mike D’s home studio, during sessions with his sons, Davis and Skyler Diamond, who perform as the indie-dance duo Very Nice Person. The Diamond brothers brought their dad onstage for a surprise show on April 11, delivering renditions of Beastie Boys songs like “Looking Down the Barrel of a Gun” and “So What’cha Want." Very Nice Person are credited as producers on the new track, alongside Carter Lang. Mike D hasn’t performed with the Beastie Boys since his bandmate Adam “MCA” Yauch died in 2012 .…