TempoPeek

Christina Aguilera · Back to Basics

Back in the Day

Back in the Day is in D flat major at 100.3 beats per minute.

4080120160200

Tempo

100 BPM · Andantemedian of 148 analyses · 100.2–100.3 across the middle eight tenths
Key
D♭ major5 flats · the key most of the analyses agreed on
Agreement
99%share of analyses that agreed
Analyses
148people who ran the extractor
One beat
598.2milliseconds, 60,000 ÷ BPM
Tuning
434.2Hz · -23 cents from A 440
Dynamics
3.34dB the level wanders from its average
Loudness
0.926Essentia's 0–1 scale, not dB
Danceability
1.405Essentia'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

148 independent analyses of this recording were submitted to AcousticBrainz. All but a handful of them — 99% — put it in D flat major, a key signature of 5 flats. The tempo printed above is the median of the 148 readings; 100% of them land within 2% of it, and they barely differ at all.

At 100.3 BPM one beat lasts 598.2 milliseconds, so a sixteenth note is 149.6 ms and a dotted eighth 448.7 ms — the delay times for this recording. Counted half as fast it is 50.2 BPM, counted twice as fast 200.6. A score would mark that Andante, by the ranges this site uses.

The analyses put the reference pitch of the recording at 434.2 Hz, which is 23 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 3.34 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 0.926 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 D flat 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 D♭ major

Each of these differs from D♭ 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 100 BPM

Note valueBeatsMillisecondsHertz
Whole note42392.80.42
Half note21196.40.84
Dotted quarter1.5897.31.11
Quarter note (one beat)1598.21.67
Quarter triplet0.667398.82.51
Dotted eighth0.75448.72.23
Eighth note0.5299.13.34
Eighth triplet0.333199.45.02
Dotted sixteenth0.375224.34.46
Sixteenth note0.25149.66.69
Sixteenth triplet0.16799.710.03
Thirty-second note0.12574.813.37

Half time 50.2 BPM · double time 200.6 BPM. Every row is one beat (598.2 ms) times the fraction in the second column.

Closest in key and tempo

  1. This Little Girl of MineRay CharlesD♭ major100BPM
  2. I Still Haven’t Found What I’m Looking ForU2D♭ major101BPM
  3. Wu-Tang ForeverDrakeD♭ major100BPM
  4. TeamLordeD♭ major100BPM
  5. Sunday Bloody SundayU2D♭ major101BPM
  6. Say GoodbyeBlack Eyed PeasD♭ major100BPM
  7. Young Niggaz2PacD♭ major101BPM
  8. The Kids Aren’t AlrightThe OffspringD♭ major100BPM
  9. A Case of YouJoni MitchellD♭ major101BPM
  10. Sweet LoveCommodoresD♭ major101BPM

Recordings in D flat major, ordered by how near their tempo is to 100 BPM. A calculation, not a recommendation.

All songs in D flat majorAll songs at 100 BPMD♭ major at 100–109 BPMChristina Aguilera

MusicBrainz collapses 1 recording id into this one. Recording id 6d2e5b7e-3357-4789-bb00-723c0f3ae413.