I wish the piano(and overall instrumental) had more instrumental quality(clarity) in it, it's a shame that during mixing and mastering the quality is reduced just so it could sound the same in every sound output device! Srsly, all so it could be catchy? You cannot just decrease the quality of a talent!!!
Instrumental has backing vocals, but i let a little more vocals in, because i prefer instrumental quality over vocal cleanliness for making instrumentals...
Download: 
Instrumental: http://www.mediafire.com/file/lc0hm0v4gr4b5ze/Deer%20In%20Headlights%20Instrumental%20With%20Backing%20Vocals.mp3
Acapella:
http://www.mediafire.com/file/xoheq7p89x95mjg/Deer%20In%20Headlights%20Acapella.mp3