The roster of musicians has swelled with the likes of aging stars (Bonnie Raitt, Rick Springfield, Jackson Browne) and newer faces like Jason Mraz and Pomplamoose.

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Grohl will also be playing with his latest project, Sound City Players, which, against all logic, brings together artists ranging from Rick Springfield and Stevie Nicks to Creedence Clearwater Revival's John Fogerty to members of Slipknot, Fear and Rage Against the Machine.

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