The Beatles Complete was published in 2 or 3 quite different different editions.

It is far from complete in that many songs are not printed
It is far from complete in that many songs have sections missing sometimes the intro is printed

The piano arrangements all sound like the theme to postman pat!

Most songs are printed in the wrong key.

On the other hand The Beatles complete SCORES is far more detailed. It includes drum music , even accordion, effects, bass, mutiple guitar parts very accurately tabbed.

Its expensive but worth it.

Many Beatle songs can bare drastic rearrangement - what about an acoustic version of helter skelter or revolution number 9