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Prélude à l'après-midi d'un fauneClaude Debussy

Released
1894
On one list
Impressionism
Updated
2026-08-30

Analysis

12 sections, the first drop of 5 at 0:30, 5% of the way in, 20% of it spent climbing.

Tempo
123 BPM
holds throughout
Dynamic range
19.5 dB
wide open — the quiet parts are genuinely quiet
Length
10:50
measured from the YouTube master

The record, end to end

energy
drums
bass
vocals
other
  1. 0:00Aintrobar -3
  2. 0:26Abuildbar 10
  3. 1:37Bliftbar 47
  4. 1:55Abreakdownbar 56
  5. 3:20Abuildbar 100
  6. 3:59Cbuildbar 120
  7. 4:20Dpeakbar 131
  8. 4:36Abreakdownbar 138
  9. 5:33Esteadybar 168
  10. 6:02Fpeakbar 183
  11. 6:30Abreakdownbar 197
  12. 10:07Aoutrobar 308

Drops at 0:30 (bar 12), 1:43 (bar 50), 2:53 (bar 86), 4:12 (bar 126), 5:32 (bar 168). A drop is a moment, not a stretch — marked on the track above rather than shaded across it.

0:00 · A · intro

opens the record below its own average energy · instrumental · one of 7 stretches of the same music (A)

Lasts
0:26
Energy
0
Brightness
31
Density
0
  • drums
  • bass
  • vocals
  • other

Brightness and density are scored against this record's own sections, not against music in general — they say how its parts differ from each other, and nothing about how it compares to anything else.

Separated into parts by a source-separation model, so each lane is the instrument it names.

drums
the drum kit, separated from the mix
bass
the bass part, separated from the mix
vocals
the voice, separated from the mix
other
everything else — synths, guitars, keys, strings
intro
opens the record below its own average energy
build
energy and brightness climbing without a break
lift
a short rise that does not resolve — a fill or a transition, not a build
breakdown
energy falling away mid-record, percussion thinning
peak
sits at the top of this record's range
steady
holding a level — the groove, neither rising nor falling
outro
the closing fall
Every moment against every other. Squares on the diagonal are sections; a bright patch off it is the record recognising itself — the second chorus meeting the first.

Measured from the YouTube master on . Section labels describe how the energy of the recording moves, not its musical form — a machine can see loudness climb and jump, it cannot hear a chorus arrive. Anything we were not confident enough to state is left out rather than shown with a caveat.

  1. Ranked No. 1 in Impressionism

    A flute alone, drifting down a tritone with no key and no pulse to speak of. Boulez said modern music begins here, and for once that kind of claim is easy to defend.