Despite selling more Records than Guns N'Roses, Metallica & Nirvana COMBINED, Led Zeppelin never had a Billboard Number 1 single, for Example modern pop Icon Rihanna has 14, the Beatles had 21 :
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Led Zeppelin: 10 Wildest Legends, Fact-Checked – Rolling Stone
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BBC - Seven Ages of Rock - Events - Led Zeppelin's record breaking concert
