Backstreet Boys · Millennium

I Need You Tonight

I Need You Tonight is in B major at 84.9 beats per minute.

Tempo

85 BPM · Andantemedian of 151 analyses · 84.9–84.9 across the middle eight tenths

Key: B major5 sharps · the key most of the analyses agreed on
Agreement: 99%share of analyses that agreed
Analyses: 151people who ran the extractor
One beat: 706.7milliseconds, 60,000 ÷ BPM
Tuning: 440.5Hz · +2 cents from A 440
Dynamics: 4.83dB the level wanders from its average
Loudness: 0.304Essentia's 0–1 scale, not dB
Danceability: 1.068Essentia'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

151 independent analyses of this recording were submitted to AcousticBrainz. All but a handful of them — 99% — put it in B major, a key signature of 5 sharps. The tempo printed above is the median of the 151 readings; 99% of them land within 2% of it, and they barely differ at all.

At 84.9 BPM one beat lasts 706.7 milliseconds, so a sixteenth note is 176.7 ms and a dotted eighth 530 ms — the delay times for this recording. Counted half as fast it is 42.5 BPM, counted twice as fast 169.8. A score would mark that Andante, by the ranges this site uses.

The analyses put the reference pitch of the recording at 440.5 Hz, which is 2 cents above concert A at 440 Hz — close enough to standard that a tuner would not argue. That is a fact about this transfer of the music, not about how it was played.

The dynamic complexity of the recording measures 4.83 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 0.304 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 B 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 B major

Each of these differs from B 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 85 BPM

Note value	Beats	Milliseconds	Hertz
Whole note	4	2826.9	0.35
Half note	2	1413.4	0.71
Dotted quarter	1.5	1060.1	0.94
Quarter note (one beat)	1	706.7	1.42
Quarter triplet	0.667	471.1	2.12
Dotted eighth	0.75	530	1.89
Eighth note	0.5	353.4	2.83
Eighth triplet	0.333	235.6	4.25
Dotted sixteenth	0.375	265	3.77
Sixteenth note	0.25	176.7	5.66
Sixteenth triplet	0.167	117.8	8.49
Thirty-second note	0.125	88.3	11.32

Half time 42.5 BPM · double time 169.8 BPM. Every row is one beat (706.7 ms) times the fraction in the second column.

Closest in key and tempo

Recordings in B major, ordered by how near their tempo is to 85 BPM. A calculation, not a recommendation.

All songs in B major All songs at 85 BPM B major at 80–89 BPM Backstreet Boys

MusicBrainz collapses 1 recording id into this one. Recording id 4e3cb9d5-309c-46f3-bfa3-b14b4d0e9f5a.