Backbeat is set in the early years of The Beatles’ performing career while mostly focusing on the time spent in Hamburg. Stuart Sutcliffe (Stephen Dorff) would need to leave the band in order for the Beatles to really become the greatest rock band in history. Sutcliffe would not be the last to leave the group. No, that honor belongs to Pete Best (Scot Williams). Best would leave by the end of 1960, having been replaced…"Backbeat: Before The Beatles Got Big"