Great comment about you don't know what you don't know. Also wonderful to see another Steve Reich aficionado. What are some similar pieces to music for 18 Musicians which I adore?
However, I do love several of the pieces by Marc Mellits, check out "Real Quiet plays the music of Marc Mellits". All rather short, but some totally lovely.
You may enjoy an 80's album by Andrew Poppy, in particular the track "The Object is a Hungry Wolf".
Do be sure to check "Shift" by Chris Hughes, which are re-instrumentations of several early Reich pieces including Piano Phase.
It's quite different in many ways from Mf18M, and you may have heard it, but I adore "The Chairman Dances" by John Adams. It couples the "chugging along" of Mf18M with much less minimalist melodic and harmonic structures. YMMV.
I'm sure I am going to remember a bunch more after I send this, so check back here in a couple of days, and I'll reply again with any extras.
