Polygon Window by Aphex Twin: BPM and key
Polygon Window by Aphex Twin is 133 BPM in A major (Camelot 11B). Half time is 67 BPM and double time is 266 BPM. The relative key is F♯ minor.
At 133 BPM this is a upbeat track: one beat every 451 ms, and about 181 four-beat bars over 5:27. That makes it faster than 70% of the 20 songs we have measured.
Polygon Window: tempo and key at a glance
| BPM | 133 |
| Half time / double time | 67 / 266 BPM |
| Key (estimated) | A major |
| Camelot code | 11B |
| Relative key | F♯ minor (11A) |
| Tempo feel | upbeat |
| Length | 5:27 |
| Released | 2025 |
| Album | Surfing On Sine Waves (Expanded Edition) |
We measured this with the same analyzer you can use on this site, running on a 30-second public preview of the track. No independent BPM figure was available to compare, so treat the tempo as a measured estimate that can be a beat or two off.
Mixing Polygon Window with other songs
11B sits next to 12B (E major) and 10B (D major) on the Camelot wheel, with 11A (F♯ minor) as its relative minor. Those four keys blend without a clash, and pushing the pitch fader by a few percent usually closes a small tempo gap.
| Song | BPM | Key | Match |
|---|---|---|---|
| RuLe · Ado | 133 (same) | 12B · E major | up one step |
| SWIM · BTS | 126 (-7 BPM) | 11B · A major | same key |
| Helena · My Chemical Romance | 126 (-7 BPM) | 12B · E major | up one step |
Closest tempos regardless of key: Dirty Diana (131), Beauty And A Beat (129).
Practising Polygon Window with a metronome
Work up to 133 BPM in four passes: 80 BPM (60%) → 100 BPM (75%) → 120 BPM (90%) → 133 BPM (100%). Open the tap metronome and type 133 (or tap along to the record) to hear the click, or use the BPM calculator to turn 133 BPM into delay times in milliseconds. To change the tempo or key of your own copy without re-recording, use the pitch & speed changer.
Check your own copy of Polygon Window
Studio, live, remastered and sped-up versions of the same song often differ by several BPM. Drop your file below: the analysis runs in your browser and the file is never uploaded.
Frequently asked questions
What is the BPM of Polygon Window by Aphex Twin?
Polygon Window runs at 133 BPM. If you prefer to count in half time that is 67 BPM, in double time 266 BPM. One beat lasts about 451 ms. This figure is measured from a 30-second preview, so it may be off by a beat or two.
What key is Polygon Window in?
We detect A major for Polygon Window, which is 11B on the Camelot wheel. Its relative key is F♯ minor (11A), and the next-door keys are 12B and 10B. Key estimates from a short preview can be off, especially on songs that change key.
What metronome speed should I use to practice Polygon Window?
To learn Polygon Window, start at 80 BPM (60% speed), move to 100, then 120, and finish at the full 133 BPM once every bar is clean. Half-time counting at 67 BPM also works for the slowest passes.
Which songs mix well with Polygon Window?
In our dataset, RuLe by Ado (133 BPM, E major); SWIM by BTS (126 BPM, A major); Helena by My Chemical Romance (126 BPM, E major) sit in a compatible key within 7 BPM. Beyond these, any track in 11B, 12B, 10B, 11A blends harmonically.
More songs: all measured songs · BPM & key finder · song key finder · how to find the BPM of a song