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A couple days ago, I learned the bass part for the verses of the Let It Be version of "One after 909." I decided that it's not really worth it to record anything unless I know at least two simultaneous parts, so I won't be posting a version, but I did notate as much as I know.
I referenced the recordings of "One after 909" on Anthology 1, and I discovered something interesting. In the bridge in the first partial take in track 25, Paul McCartney starts to play the same bass figure that he took from Chuck Berry's "I'm Talking about You" and used in "I Saw Her Standing There" (which I wrote about back in November).
In "Talking about You," the figure is:
In "I Saw Her Standing There":
And in "One after 909":
The only difference is the key. I should note that all three songs play this figure raised to different pitches too. At the beginning of the bridge in "One after 909," it's actually played a fourth higher because it's underneath an E major chord, so it's exactly the same as what's played for the majority of the verses of "I Saw Her Standing There."
The "complete" take of "One after 909" on Anthology 1 (which the liner notes explain is an edit of takes 4 and 5) doesn't have this feature. Apparently, McCartney elected to play a simpler bass part because he didn't have a pick with him. This figure isn't present in the version on Let It Be either.
For what it's worth, here's some chronology:
11 February 1963 - "I Saw Her Standing There" recorded
5 March 1963 - "One after 909" [takes on Anthology 1] recorded
16 March 1963 - The Beatles' cover of Chuck Berry's "I'm Talking about You" (in E major, rather than the original's C major) broadcast live on the radio show Saturday Club.