The Beatles arrived in America in February 1964, and the earth twisted and shouted on its axis.
Now the Fab Four, their heirs and assigns, and whoever else might be involved, have somehow allowed a bunch of promotional videos out of the vault. This, for perhaps obvious reasons, is one of the longer ones.
I’m not absolutely certain, but I think they’re playing over a copy of the original master tape, minus the vocals. (With McCartney on piano and lead, there’s no place for a bass player, and indeed, the bass is mixed out of the master.)