GLASTONBURY, ENGLAND - JUNE 26: Lemmy and Phil Campbell of Motorhead perform at the Glastonbury Festival at Worthy Farm, Pilt
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The music world rushed online on Monday night (Dec. 28) to toast Ian Fraser Kilmister, the metal master known by the world as Lemmy. The leader of Motörhead passed away following "a short battle with an extremely aggressive cancer," and one of rock's brightest lights was sadly extinguished days after the English singer/guitarist/bassist's 70th birthday.

From other rock gods to longtime admirers, from Osbourne to Mustaine to Durst, check out some of the most touching Twitter reactions to Lemmy's untimely passing: