Frank Zappa is pushed from the stage by a jealous boyfriend of a female fan during an encore at The Rainbow Theatre, London, 10th December 1971. Zappa's injuries were serious enough to stop him touring ofr a year and a half. (Photo by Michael Putland/Getty Images)
HOLLYWOOD – SEPTEMBER 27: Alice Cooper performs at Hard Rock Live! at the Seminole Hard Rock Hotel and Casino on September 27, 2005 in Hollywood, California. (Photo by Uri Schanker/Getty Images)
LAS VEGAS, NV – SEPTEMBER 04: Drummer Tim "Herb" Alexander of Primus performs at The Joint inside the Hard Rock Hotel & Casino on September 4, 2015 in Las Vegas, Nevada. (Photo by Ethan Miller/Getty Images)
