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Zappa Gear on X: "Frank Zappa's floor pedals used in the Roxy shows: a Boomerang wah-wah and a Mu-tron III envelope follower https://t.co/X26XJiDMb9" / X
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Dweezil Zappa Reveals 'Crazy' Amount of Money His Dad Spent on Guitar Rig, Names Gear Frank 'Barely Used' | Ultimate Guitar
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