80 BPM is typical for Downtempo, Ambient. One beat lasts 750 ms and a 16-bar phrase runs 48 seconds.
Top Downtempo tracks| 1 beat (1/4 note) | 750 ms |
|---|---|
| 1/8 note (delay) | 375 ms |
| 1/16 note | 187.5 ms |
| 1 bar (4/4) | 3 s |
| 16-bar phrase | 48 s |
| Half time | 40 BPM |
| Double time | 160 BPM |
BPM and key measured from the audio by BeatSeek, not taken from uploader tags.