Crystal Bowersox: "I'm Alright" Watch here! Lee DeWyze: "Kiss From a Rose" Watch here! 'American Idol' Songs of Cinema week: Who wins?online survey We had to throw in a picture of Crystal and Lee's duet "Falling Slowly." It was arguably the best performance of the entire season and we sincerely hope they reprise it for the finale. Watch here! Related: 'Idol' Top 4 Dispatch: Simon Cowell is on someone's bucket list?