Human heartbeat. Five effects included:
- Normal 80 bpm (0:24) – preview 0:00 – 0:24
- Accelerated 140 bpm (0:14) – preview 0:24 – 0:38
- Extreme 200 bpm (0:10) – preview 0:39 – 0:49
- Accelerating from 80 to 200 bpm (0:26) – preview 0:50 – 1:16
- Decelerating from 200 to 80 bpm (0:27) – preview 1:17 – 1:45
All files are in mp3 and high quality wav format.