Isaac , Timberlake , Mulligan , Driver and others performed the music live . The exception was " The Auld Triangle " , which was lip-synced , with Timberlake singing bass . ( Timberlake 's vocal range was on display in the film . Critic Janet Maslin , listening to a soundtrack recording , confused Timberlake 's voice with Mulligan 's , which she thought resembled that of Mary Travers . ) '' Inside Llewyn Davis '' had its worldwide premiere on May 19 at the 2013 Cannes Film Festival . The film then screened at other film festivals , including the New York Film Festival in September , the AFI Film Festival , on its November 14 close , and the Torino Film Festival , also in November
2013 Cannes Film Festival
2013 Cannes Film Festival
Inside Llewyn Davis