These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Special Effect Failure: most noticeable on higher definitions. (When you can see the fluorescent lightbulbs in the tape case...)
For about two-thirds of the film, the film soundtrack recording is inconsistent — the level is a little low and a little uneven. Since this is a musical, that is a problem. It also encouraged Fun with Subtitles in the last DVD release.
It is known that Ringo Starr was forced to drum along with a drum machine to keep time. The big problem? You can still hear that drum machine in the film! That really was unfair to Ringo.