Best shit ever.
Keys and tonality are for nubs.
You have to sit down and listen to this, you have to think about it, you have to want to understand to have any hope of enjoying this music. It allows for the exploration of sound beyond normal constants and forces you musically onto another plane as you have to attempt to grasp every note.
SCHOENBERG six little piano pieces op. 19 - YouTube
Olivier Messiaen - Quatuor pour la fin du temps (Quartet for the End of Time) (1941) - YouTube