The song is you

Behind his hipness and attitude, Julian Donahue is going through an emotional crisis that started when his two-year-old son died of a freak infection. His wife, Rachel, reacted by vigorously cheating on him; Julian, meanwhile, went impotent. But his potency returns one night in his Brooklyn apartment as he listens to a CD by rising Irish singer-starlet Cait O'Dwyer. As his interest in her music and career grows into a full-blown obsession, Julian meets washed-up rocker-turned-painter Alec Stamford (who harbors a few of his own bizarre yearnings), and Julian is propelled to do more than mill around in the back of crowds at Cait's performances.