John Entwistle Recalls Hearing "Love Me Do" The First Time

One night in October 1962, [Roger] Daltrey brought along to
rehearsals a new single that he had picked up.  "Love Me Do," Daltrey
informed the others, was by a band out of Liverpool, the Beatles. Trained by the Middlesex  Youth Orchestra in perfect, concert pitch, the
song was an affront to Entwistle's exacting standards.  "Roger thought
the Beatles were going to be big, so we had to learn it," he wrote. "When he played the record, I was horrified.  John Lennon's mouth organ
was out of tune.  It drove me nuts.  I prayed that it wouldn't be a hit,
but of course it was. and when Roger played the mouth organ part onstage
with us, he was even more out of tune than Lennon, if that was possible.
 It meant that, because of that one song, we had to tune all of our
instruments to the harmonica.  I was in hell."
-- from Paul Rees' excellent Entwistle bio