starts at 2:08
How did this guy figure the key of the song while playing a bunch of chords over a 2-3 seconds of music
if i had to do it i would have to try identify chords over at least 20 seconds of music and say ok this chord is that one...this is that one...bla bla
how can he do it that way? how does that work
and how can he be sure its C minor that quick and not D# major