If you were around in the days of the old Guitar Hero games, this kind of video will be all too familiar I'm sure
Simply load up 'All of Me' by John Legend and sync this video up perfectly on expert difficulty, turn the volume up and hold your mic on your speakers.
I got 'Perfect' on every phrase the first time I tried.
NOT MY VIDEO! All credit goes to LoAlexandria on YouTube!
Can also be used to get