Jwasc92Wrestling has now finished off all the New Primetime songs (the ones I've posted so far, anyway). Unknown Song #51 is "Amped," by David Robidoux. Robidoux, like Tom Hedden, is a well-known NFL Films composer, and many of his compositions appear on the later discs of the NFL's famous Autumn Thunder compilation. Amped appears on the NFL Music Library album NFL-0049.
Again, special thanks to Jwasc92Wrestling on YouTube for ID'ing US #51 as well as US #'s 52-56.