PAST MASTERS VOLUME 1

This is an essential album as it contains every single song that is not included in any of their regular albums from the 1962-1964 years. If you have their first albums you'll have to get Past Masters if you don't wanna lose their biggest hit singles: From Me To You, She Loves You, I Want To Hold Your Hand, and I Feel Fine are essential. Of course this stuff is not remotely related with progressive rock, but it has a huge historical relevance.