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25 tracks on Spotify's Peaceful Piano were measured on 2026-07-08 — spectrum, loudness, dynamics, stereo image and timbre. This is the playlist's sound as numbers, and your track can be scored against it below.
Third-octave spectrum of the Peaceful Piano lineup: mean level per band (line) and one standard deviation (shaded), in dB. Measured, not illustrated.
Your track's hook is measured the same way and ranked against the tracks already on the playlist — plus 58 other editorial lineups, so you see where it fits best, not just here.
Your file is analyzed and deleted — we keep numbers, not audio.
Tonally, Peaceful Piano is steeply dark — energy is concentrated low, with the top octaves rolled well down: the median spectral tilt across its 25 measured tracks is -5.50 dB per octave, and the spectral centroid sits at 252 Hz — 480 Hz below the median of all 59 playlists we measure. Dynamically it is dynamic — peaks ride well clear of the average level, at a median PLR of 20.8 dB (track range 18.2–24.4 dB). Loudness range is 5.6 LU — tracks move through distinctly quiet and loud sections. The stereo image is very wide — side energy is strong enough that vinyl cutting would need attention (median correlation 0.34, mid/side ratio 3.0 dB). Musically, the lineup shows tonal centers are present but soft (key clarity 0.69), an even split between major and minor keys. Event density points to busy arrangements: 3.21 onsets per second at the median. On the engine's perceptual scales the lineup reads Warmth 55/100 and Brightness 11/100.
| Metric | Median | Track range |
|---|---|---|
| Peak-to-loudness ratio (PLR) | 20.8 dB | 18.2 – 24.4 |
| Loudness range (LRA) | 5.6 LU | 3.8 – 9.2 |
| Crest factor | 18.6 dB | 14.7 – 21.8 |
| Dynamic range | 14.2 dB | 7.9 – 18.7 |
| Spectral tilt | -5.50 dB/oct | -5.85 – -4.31 |
| Spectral centroid | 252 Hz | 176 – 325 |
| Spectral rolloff | 421 Hz | 311 – 553 |
| Stereo correlation | 0.34 | -0.10 – 0.60 |
| Mid/side ratio | 3.0 dB | -0.9 – 6.0 |
| Onset rate | 3.21 events/s | 1.98 – 5.28 |
| Key clarity | 0.69 | 0.24 – 0.85 |
| Repetitiveness | 0.82 | 0.62 – 0.93 |
Median integrated loudness of the measured previews: -19.7 LUFS. Treat this as a property of loudness-normalized 30-second previews, not a mastering target — see what LUFS is.
The engine analyzes public 30-second previews of the 25 tracks on the playlist lineup of 2026-07-08: a 30-band third-octave spectrum, loudness and dynamics metering, stereo correlation and timbre statistics. The previews are deleted after measurement — only the statistics are kept.
The median peak-to-loudness ratio is 20.8 dB, with individual tracks ranging from 18.2 to 24.4 dB. Higher PLR means more transient headroom; lower means denser limiting.
The lineup's median stereo correlation is 0.34. If your track is far wider or narrower than that, it will stand out from the playlist's sound — which the Radar score reflects.
No. Editors weigh story, momentum and taste — things no analysis can measure. What the profile tells you is whether your track sounds like it belongs, so you can spend your pitches where the fit is real.
By measured distance on tilt, centroid, PLR, crest and correlation.
One upload, ranked against every measured lineup.
The loudness unit behind every streaming platform's normalization.
How editorial pitching works and what you control.
Peaceful Piano is a playlist operated by Spotify. The name is used to identify what was measured — public 30-second previews of the lineup on 2026-07-08. Phosphor Audio is not affiliated with or endorsed by Spotify.