Nope...The Beatles did not record on a cassette based multitrack...they used a wollensak reel to reel machine...and I doubt if cassettes even existed at that point.
what? the way i'm reading the OP is:
Has anyone heard any good or fairly decent albums recorded entirely on 4-track OR portastudio-(cassette) OR boombox OR hand held recorder OR answering machine-ect.?
i realize they didn't record on an answering machine, hand held recorder, boombox, cassette, or portastudio, but it was definitely 4 tracks after they bounced the tracks down.