Prince is alive and well — and he has a new purple piano. That's what fans learned Saturday night at Paisley Park, where Prince threw a dance party and made a brief appearance to let everyone know he's perfectly fine after a reported hospital visit on Friday. "Wait a few days before you waste any prayers," he told the people at Paisley. Earlier on Saturday, Prince joined in the Record Store Day fun by stopping at the Electric Fetus in Minneapolis to buy a few items including a Stevie Wonder oldie — on CD, though, not vinyl. (Star Tribune)

Biggest lineup ever?

It would be just about the biggest conceivable classic-rock festival lineup: Paul McCartney, the Rolling Stones, Bob Dylan, the Who, Neil Young, and Roger Waters are "reportedly in the finishing stages" of confirming a joint appearance in October in Indio, Calif. Two titans would play each of three nights over the course of a weekend, with a second weekend repeat possible. It would be the first time McCartney and Dylan appeared on the same bill at a music festival. (Rolling Stone)

This weekend's Coachella news

On Saturday night at Coachella, Guns N' Roses welcomed special guest Angus Young to celebrate the just-announced news that Axl Rose will be standing in for AC/DC frontman Brian Johnson, who left the band's current tour due to concerns over potential hearing loss. AC/DC's shows with Rose will run from May 7 through June 12, prior to the kickoff of Guns N' Roses' summer tour. (Rolling Stone)

Snoop Dogg, Common, and N.W.A. bandmates MC Ren and DJ Yella joined Ice Cube for a set that Billboard writes "will likely go down as one of the highlights of the weekend."

Kesha made a surprise Coachella appearance during Zedd’s set, performing the DJ's song "True Colors."

Five lives lost at Argentina music festival

Five concertgoers have died, and five more are "critically ill," in the wake of the Time Warp Electronic Music Festival in Buenos Aires. The cause of the deaths was apparently drug use; authorities have closed the concert venue and are currently investigating the deaths' circumstances. (Billboard)

Muse drone crashes into crowd

A blimp-shaped drone being used as a prop by Muse at London's O2 Arena crashed into the crowd on Thursday night; fortunately, no injuries have been reported. The drone is meant to dramatize the themes of the band's recent release Drones, a concept album about drone warfare. (Rolling Stone)

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Today's Springsteen news

Bruce Springsteen welcomed local hero Bob Seger onstage during a Thursday night show in Detroit; Seger joined in on tambourine and vocals for "10th Avenue Freeze-Out" and a cover of the Isley Brothers' "Shout." The appearance was particularly apt since Springsteen's current tour is celebrating The River album, and Seger first played with Springsteen on the opening night of the original River tour in 1980. (Rolling Stone)

Jessica Springsteen, the Boss's 24-year-old daughter, is officially out of consideration for this year's U.S. Olympic equestrian team. A world-class rider, she participated in the 2012 Summer Olympics as an alternate on the American team; Billboard reports that earlier this year, "Bruce and Patti Scialfa hosted a fundraiser for the team, raising $1.5 million."

Love is a long road

Tom Petty and Dhani Harrison appear in a new episode of the web series :DRYVRS, starring Patricia Arquette as a drug-addled driver who becomes convinced that series creator Jack Dishel is a young Bob Dylan. (Rolling Stone)