Watch: Kelly Clarkson and Seal Perform National Anthem at Indy 500

The Indianapolis Motor Speedway celebrated its 100th birthday on Sunday, and Former "American Idol" winner Kelly Clarkson, Seal and David Foster kicked off the event with a moving performance of the national anthem.

The three made somewhat of an interesting (albeit compelling) coupling, with Kelly Clarkson and Seal providing vocal accompaniment to musician/ producer, David Foster on Piano.

Watch the video for a rewind of Sunday's awesome performance right here, in case you missed it!