Since I'm not exactly a huge fan of the Beatles, I'm very on the fence about this game. The decider comes down to vocal harmonies. Can you sing harmony as a solo player with no one on melody? Can you play guitar while singing harmonies whenever you get the chance? I'm not saying I want to sing only harmonies, as I know there are many, many places where there are none. But if I sang harmonies every time they were available while playing alone, would the game fail me out? Thanks.