24. Billy Sheehan
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One of the most respected and sought-after rock bassists, Sheehan is still going strong into his mid-60s. A master of three-finger picking, Sheehan is probably best known for his time in David Lee Roth’s backing band or with Mr. Big – most memorable for its 1990s hit “To Be With You.” He’s also worked with Michael Schenker and Steve Vai.