Nicole Kidman. Not a singer before Moulin Rouge!, Kidman had well-received vocal performances in the film. Her collaboration with Ewan McGregor on "Come What May" peaked at No.27 in the UK Singles Chart. Later she collaborated with Robbie Williams on "Somethin' Stupid", a cover of Williams' swing covers album Swing When You're Winning. It peaked at No.8 in the Australian ARIAnet Singles Chart, and at No.1 for three weeks in the UK.