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“I’ve always been an on-the-one guy, and I knew I could count on Pops to be there every time”: Robert “Pops” Popwell’s basslines rivaled any of his session bass peers – and few are better than The Crusaders’ Sweet ’N’ Sour

“Until I found the Mu-Tron, I never heard anything that made the bass sound totally wacko”: How Bootsy Collins’ mastery of the envelope filter became the flamboyant funkateer’s signature sound