I Feel Fine has the first feedback ever recorded -the sound at the very beginning, created by an electric guitar coming too close to the amplifier-.
The Beatles were the first with a lot of things
- a band writing its own material for a great part
- the line up from a band hasn't changed much basically in forty years, since the Beatles
- they invented playing in a stadium
- they were the first British artists to be successfull in the States
- their influence on other groups was enormous. For instance, the Rolling Stones and the Hollies copied almost everything the Beatles did musically, but also with things like clothing, haircuts,styles in general
- they had a great influence on both sexes and worldwide
- the English language became the standard in pop music (the Beatles recorded two singles in German, because the Germans would not listen to English music before the Beatles)
- rock and roll was lifted to a higher level and respected by a greater audience then ever before
- press conferences became funny meetings instead of giving standard answers to standard question.
- they were a group that made it, before that, it was merely single artists with a backing group. These were four members, each with their own quality and each unreplacable.
- in order to give their fans value for their money, they hardly put any singles on their albums. Well, in the USA it happened, much to the disagreement of the Beatles themselves.
O, there's a lot more, specially when it comes to recording. But there's more knowledge about that topic than in my head.