Different Trains (1988) will probably go down in history as Reich's masterpiece. And deservedly so. Reich's phase-shifting minimalism is made dazzlingly entertaining in Different Trains, which is scored for string quartet and digitally sampled voices that repeat bits of speech concerning trains and Reich's experience with them growing up. The sinister part here is than some trains carried Jews to death camps. That's here as well. The Kronos Quartet has also never sounded better. Electric Counterpoint (1987) has one guitar--Pat Metheny in this case-- playing to 10 pre-recorded motifs, also on guitar. You absolutely need this.
1. Different Trains: America - Before The War "Kronos Quartet"
2. Different Trains: Europe - During The War "Kronos Quartet"
3. Different Trains: After The War "Kronos Quartet"
4. Electric Counterpoint: Fast
5. Electric Counterpoint: Slow
6. Electric Counterpoint: Fast