One cool thing about Lose That Girl is that they alternate between that Gm and C#m on the chorus and verse. I think that is such a "Beatle" thing to do.
For those of you who don't play guitar: This song is a rather typical 50's cliche song in a sense, but The Beatles put a change in it that you wouldn't expect. In fact, one of the bands that I recently joined played this song wrong for 15 years. When I joined I pointed out the weird twist that The Fabs put in, and they didn't believe me until they researched it.
They (and I) still will screw it up at times because a musician will naturally want to go to the Cm on the verses, but that is a mistake because John didn't go to that chord on the verses.
Let's also say this about Help!
United Artists made a killing off of Hard Day's Night in the U.S. because they released the soundtrack. (Although Capitol had rights to issue singles) Help! was a different story. I can't remember how, but Capitol somehow made (most of) the money from Help! .
It's so complicated. I know that George Martin and Dick Lester didn't get along, so George Martin did not get to do the scoring on the Help! film...and thus the not the royalties either.
(See...aren't you glad I'm back with these rambling soliloquies of things that I "think" I know?)