Danganronpa has an interesting soundtrack..some long and relaxing tracks for wandering around the school, solving murders. I like the instruments used in the tracks, pretty unexpected combinations of piano, synths, trumpet, percussion..it all combines to a pretty unique sound.

"BOX 15" is played when the action heats up and you're investigating, and then a rock variant ("BOX 16") is later used in the game when the mystery reaches a climax.

There are some nice covers out there as well, like this "Beautiful Dead" Metal Guitar Cover by FamilyJules.