The sound of rushing water fills you with determination.
Waterfall is the 31st track in the Undertale Soundtrack. It plays while exploring the titular Waterfall area, and gets more intense the more it progresses in playback. It is primarily based on Ruins.
During the Genocide Route, it is generally played at 0.13x (87% reduced) speed. However, when hearing the track for the first time (immediately after seeing Undyne), it plays a bit faster: at 0.15x (85% reduced) speed.
- An Examination of Leitmotifs and Their Use to Shape Narrative in UNDERTALE – Part 1 of 2 - jasonyu.me