Alice Cooper sat in with his buddy Johnny Depp last week during a show at the NAMM convention in Anaheim, California. Alice did “Brown Sugar,” “Revolution,” “I’m Eighteen,” “School’s Out,” “Come Together” and “My Generation.” Joe Walsh also sat in, doing “Funk 49,” “Rocky Mountain Way,” “Walk Away” and a cover of “Search and Destroy.”

U2’s The Edge made a surprise appearance at today’s (Wednesday’s) Hollywood Walk of Fame induction of longtime Grammy Awards producer Ken Ehrlich. Stevie Wonder and Smokey Robinson both gave introductory speeches, with Robinson reading a message from President and Michelle Obama to conclude his remarks.

Pretty Things singer Phil May has been diagnosed with the lung disease C.O.P.D. and is being encouraged by those closest to him to stop drinking and smoking. To that end, a letter-writing campaign has been started to help persuade Phil he needs to do this. If you want to add your voice, send your letter to: Phil May, c/o Ugly Things, P.O. Box 3021, La Mesa, CA 91944.

HBO has ordered a pilot for a new period drama about musical prodigies called Virtuoso, which counts Elton John and his partner David Furnish among its executive producers.