Slapback is a previously unreleased song recorded in 1979 in pre-production rehearsals for the album Heaven and Hell (1980). It was leaked on March 5, 2021 by Gary Rees, stepson of keyboardist Geoff Nicholls, who found it on a cassette along with other recording tapes of the album's compositions in 1979. Geezer Butler first confirmed the leak of this song, also assuring that it was he who played the bass. Asked in an interview with SiriusXM's "Trunk Nation With Eddie Trunk" on Monday (March 8) if he knew anything about this purportedly unreleased tune, Butler said: "Yeah, that was one of the songs that we did before I left," referring to the fact that he exited SABBATH for a short time during the "Heaven And Hell" sessions while he was dealing with some personal issues. "It's probably the reason I did leave. [Laughs] It was just one of those songs that didn't make the grade." Asked if he in fact played bass on the recording th...
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