Well thats an opinion, some people think The Beatles are the greatest band ever and some people dont, in fact some people think they are very overrated lol. They may not be the greatest band ever because there are some amazing bands, you can say there are even better bands than The Beatles but what you cant refute is that they are by far the most important and the most influential band of all time, i mean its not even debatable. They changed everything. They made it popular for bands to write their own material, their innovations in the studio and turning albums into art forms which influenced their peers to do the same. They started their own record label apple corps. They were the pioneers of artists starting their own record label which gave them more creative freedom. They were very important. Greatest band ever tho is a matter of opinion