THE PREFAB FOUR
At first glimpse, Iain Softley’s Backbeat looks like a gritty trifle aimed at nostalgic Beatles buffs. It dusts off the old story of Stu Sutcliffe, John Lennon’s best friend in Liverpool, who played bass with the group from 1959 to 1961. A halfhearted musician, Sutcliffe found his head turned by…