In the original script for the movie American Beauty Beatles songs are used numerous times, such as when Ricky is in his jail cell and when Lester sees Ricky's music when getting pot from him. I can see why Lester would be interested in the Beatles, since they were popular when he was younger.
But why would Ricky be interested in them and Pink Floyd, considering he's an outcast who sees the inner beauty in things? Wouldn't a nonconformist like him be more interested in music that isn't popular as opposed to the Beatles, who many people liked because they wanted to conform with their peers?
And how does the song "Fixing a Hole" suit Ricky when he is in jail?