He is credited as co-writer on 10 of the 12 songs appearing on the album Never Mind the Bollocks, Here's the Sex Pistols. He was the original bass player of the Sex Pistols, having been introduced to guitarist Steve Jones and drummer Paul Cook while working in SEX, Malcolm McLaren's clothing boutique in London. Matlock attended Saint Martin's School of Art until 1974. Jones said that the group would have recorded more albums if Matlock had stayed in the band and they had not participated in the television interview with Bill Grundy.
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Who cares if he washed his feet? That was him.
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In the 2002 Classic Albums documentary about Never Mind the Bollocks, Here's the Sex Pistols, Jones stated that in retrospect, pushing Matlock out of the band was a mistake: "We were what we were. Music historian David Howard states that Matlock did not participate in any of the Never Mind the Bollocks recording sessions. Jones played bass on the two songs recorded after Matlock's departure, with Vicious also contributing to the song "Bodies".
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However, Matlock denied the "session musician" label, stating that all but two of the songs appearing on the album had already been recorded as singles or b-sides before his departure. In his autobiography, Rotten: No Irish, No Blacks, No Dogs, John Lydon stated that Matlock worked on Sex Pistols material (including their album Never Mind the Bollocks, Here's the Sex Pistols), after he had left the band, as a paid session musician.