He come grooving up slowly
“Groovin' up slowly” refers to the fact that Ringo was the last to join the final and ‘official’ line-up of the band, yet his drumming ability was very limited and borderline acceptable at the beginning, especially compared to the abilities of the rest of the band. As he honed his skill, he slowly became better and better at holding down the beat of the music, or ‘groove’ as it was also loosely referred to. As the group continued to record and release music, his talent slowly came up to the standards of the other three.
“He come grooving up slowly” is a subtly changed line from the Chuck Berry song “You Can’t Catch Me,” where the original line was, “Here come ol' flattop/he was movin' up with me.”
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