I recently stumbled across a composer named Steve Reich. His work absolutely astonished me. Much of it is very tempo based (think blinkers on two different cars slowly aligning until they are blinking in sync).

Anyway, I was completely mesmerized by it and thought it deserved to be shared. (I mean hey, he won a Pulitzer!).

Different Trains

Music for Pieces of Wood

Violin Phase

Clapping Music

Music for 18 Musicians

Violin Phase

One Man Two Pianos

As a side note, my favorite composer of all time is Eric Whitacre. Check out some of his work.