WILLIE NELSON and SARA EVANS

The country couple were scheduled to perform a duet before the big sports showdown between the New York Giants and New England Patriots on Sunday (03Feb08) as WENN went to press.

Evans was to perform a 'tailgate' party concert outside the University of Phoenix Stadium, where the game is being played later today (03Feb08) before joining Nelson for a rendition of Mammas, Don't Let Your Babies Grow Up to Be Cowboys as part of the pre-match telecast.

Alicia Keys will perform a pre-game concert on the field, and American Idol winner Jordin Sparks will sing the national anthem.

Rockers Tom Petty + the Heartbreakers will perform a 12-minute concert during the half-time celebration.

Source: WENN