Neil Diamond · September Morn

I’m a Believer

I’m a Believer is in E major at 79.9 beats per minute.

Tempo

80 BPM · Andantemedian of 231 analyses · 79.8–80 across the middle eight tenths

Key: E major4 sharps · the key most of the analyses agreed on
Agreement: 100%share of analyses that agreed
Analyses: 231people who ran the extractor
One beat: 750.9milliseconds, 60,000 ÷ BPM
Tuning: 436.7Hz · -13 cents from A 440
Dynamics: 4.25dB the level wanders from its average
Loudness: 0.917Essentia's 0–1 scale, not dB
Danceability: 1.103Essentia's danceability, 0–3

Source: AcousticBrainz, dump of 2022-06-23 (CC0) · MusicBrainz core data, 2026-09-17 (CC0) · how each number is measured. Measured up to 23.06.2022 — AcousticBrainz stopped collecting in 2022, so nothing released after that date is here.

What the numbers say

231 independent analyses of this recording were submitted to AcousticBrainz. All but a handful of them — 100% — put it in E major, a key signature of 4 sharps. The tempo printed above is the median of the 231 readings; 100% of them land within 2% of it, and they barely differ at all.

At 79.9 BPM one beat lasts 750.9 milliseconds, so a sixteenth note is 187.7 ms and a dotted eighth 563.2 ms — the delay times for this recording. Counted half as fast it is 40 BPM, counted twice as fast 159.8. A score would mark that Andante, by the ranges this site uses.

The analyses put the reference pitch of the recording at 436.7 Hz, which is 13 cents below concert A at 440 Hz — the sort of drift a tape machine or a slightly different mastering leaves behind. That is a fact about this transfer of the music, not about how it was played.

The dynamic complexity of the recording measures 4.25 dB: that is how far the level wanders from its own average, so a small number means a loud, flat master and a large one means a recording that still breathes. Its average loudness is 0.917 on Essentia's 0-to-1 scale, which is not decibels and is not comparable to a streaming service's number.

10 other recordings here are in E major; the ones listed below are the closest in tempo.

Beats per bar are not in this dataset. AcousticBrainz's analysis reports a tempo, a key and a loudness, and no time signature at all, so this page does not print one — a 4/4 here would be a guess dressed as a measurement.

Keys that fit with E major

Each of these differs from E major by at most one accidental, or shares its tonic. That is the whole of what a mixing wheel encodes; here the relations are named instead of numbered.

Delay times at 80 BPM

Note value	Beats	Milliseconds	Hertz
Whole note	4	3003.8	0.33
Half note	2	1501.9	0.67
Dotted quarter	1.5	1126.4	0.89
Quarter note (one beat)	1	750.9	1.33
Quarter triplet	0.667	500.6	2
Dotted eighth	0.75	563.2	1.78
Eighth note	0.5	375.5	2.66
Eighth triplet	0.333	250.3	4
Dotted sixteenth	0.375	281.6	3.55
Sixteenth note	0.25	187.7	5.33
Sixteenth triplet	0.167	125.2	7.99
Thirty-second note	0.125	93.9	10.65

Half time 40 BPM · double time 159.8 BPM. Every row is one beat (750.9 ms) times the fraction in the second column.

The same title by somebody else

Matched on the title alone, so this list can hold a different song that happens to share a name. Nothing here claims one is a cover of the other.

Closest in key and tempo

Recordings in E major, ordered by how near their tempo is to 80 BPM. A calculation, not a recommendation.

All songs in E major All songs at 80 BPM E major at 70–79 BPM Neil Diamond

MusicBrainz collapses 24 recording ids into this one. Recording id 6ede277b-4716-4e61-849d-b984ce992b21.