I was introduced to Javanese Gamelan before I ever heard Glass, and when I finally did it felt like someone had pushed it to the limits of speed and precision.
And I love the parallels to things like I Am Sitting In A Room by Alving Lucier: https://www.youtube.com/watch?v=fAxHlLK3Oyk (If you're not familiar with this piece, it might be worth reading about it first - https://en.wikipedia.org/wiki/I_Am_Sitting_in_a_Room)
I hesitate to say this because it depends on your tastes, but I'd recommend setting aside the time to listen to these beginning to end if you can. You'll probably feel a bit fidgety for the first 10 / 15 minutes, but in my view it's really worth persevering because I find the payoffs are worth it.
"Music in 12 Parts" is my go-to for cross-country flights. Always a pleasure.
To put it mildly, it was fucking wild. It blew my 13 year old mind. I had never heard anything like it.
I went over to my neighbor's house to get the TV guide the next day so I could read who the musical guest was because I had missed it.
It's known as one of the weirdest episodes of SNL ever: https://www.vulture.com/2013/03/the-weirdest-episode-of-the-...
It was a "lost" episode that I searched online for for decades.
Luckily a VHS copy emerged in 2020: https://archive.org/details/saturday-night-live-s-11-e-13-ge...
Glass's work in his earlier years was more iterative than repetitive, and often performed with the ferocity of a tornado. People mock his work, especially his later, softer work, but those early pieces as originally performed really rip. https://www.youtube.com/watch?v=pRerJeYmUgY