When news broke on Wednesday that Pierre Robert , the Philadelphia rock DJ, had died at 70 , it became apparent it wasn’t just a local story. The city, of course, was mourning, but rock luminaries also began paying tribute.

Jon Bon Jovi , whom Robert often interviewed on air at 93.3 WMMR, where Robert worked for 44 years, wrote a lengthy remembrance on Instagram. “Today we lost a great friend. Someone who truly LOVED music. All types of music. Someone who loved musicians. Not just famous ones, or chart toppers. He admired local artists and tomorrow’s rising stars,” Bon Jovi wrote in part. “The station was lucky to have him on the air. We were all lucky to have him as a guide to his musical galaxy. And I was lucky to have him as a friend.”

Alice Cooper, who sat with Robert for an

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