(Don't worry, it's a word I made up, because when I hear this, I get reminded of something growing exponentially. I bet not many people agree with the sentiment. lol)
Example) at 4:23~25, there is a succession of chords that sounds "modern".
I'd like to know if this technique(?) has any name,
and what is happening theory-wise. Basically, what should I do if I want to do this on the piano?
Cheers