Steve Reich, Music for Eighteen Musicians - Synergy Vocals - Ensemble in...

https://youtu.be/ApnbymNz9dE

I've had about 8-9 hours of it but I'm bucketlisting a 24 hour cumulatitive period  of intrinsic instrospection iframe width 480 height 270 src https://www.youtube.com/embed/ApnbymNz9dE frameborder 0 allowfullscreen> /iframe>