Splice's score consists of piano tracks. The tunes are non-intrusive, yet emotional and active. Sweeping piano rhythms inspire images of angels in flight, or maybe just biological cells being pushed and pulled into place. One complaint is that the tracks don't separate themselves from each other. Each is named after a different angel, but none carries its own noticeably unique personality. The music is beautiful, but the tracks sort of blend together, each sounding similar to the last. It's clear each song is a different track, but just barely.
While the songs sound similar, the soundtrack doesn't feel repetitive. In a way it feels less like seven short tracks and more like one long backing tune, but it doesn't outstay its welcome. On the contrary, as a whole it's a relaxing, moody soundtrack.