'Glee' Cast, 'Lucky' -- New Song From 'Duets'

'Glee' cast members Sam and Quinn team up to perform 'Lucky,' originally sung by Jason Mraz and Colbie Caillat, in one of many musical pairings from this week's episode, appropriately entitled 'Duets.'

The pair's lovely voices are on full display at the song's start, as they trade sweet, romantic compliments with just a gently plucked guitar as accompaniment.

Soon enough, the tune unfolds with piano and strings, as the duo join forces on the chorus to talk about how lucky they are: "I'm lucky I'm in love with my best friend / Lucky to have been where I have been / Lucky to be coming home again."

'Duets' features team leaders Rachel and Finn deciding to throw the club's duet competition in favor of new recruit Sam, presumably to help him build his confidence.

Head over to AOL Radio's 'Glee' station to check out this song way in advance of its Fox Television premiere on Oct. 12.