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Although he did write one—Manfred Mann's Earth Band's cover of "Blinded by the Light" went to #1. He's had 12 Top 10 hits, but he never got above #2, with "Dancing in the Dark," blocked by the brilliant juggernaut that was "When Doves Cry."Bruce Springsteen had no number 1 hit.
According to wiki, it was Jackson on a Linn drum machine. Discogs has lotsa details, and lists Porcaro for 4 other songs.