25 tracks on Spotify's Sleep were measured on 2026-08-31: 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 Sleep 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 60 other editorial lineups, so you see where it fits best, not just here.
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Sleep leans properly dark: almost all the energy lives low, darker than most of the 61 playlists we measure. A bright, airy mix will stick out here.
This lineup keeps real dynamics: peaks ride well above the average level, nothing sounds squashed.
The stereo image is wide but safe: width on the synths, center intact. Musically, minor keys dominate, hooks repeat hard. On our perceptual scales the room reads warmth and brightness.
The exact numbers, the median and the spread for every metric, are in the table below.
| Metric | Median | Track range |
|---|---|---|
| Peak-to-loudness ratio (PLR) | 18.1 dB | 13.7 – 22.9 |
| Loudness range (LRA) | 2.8 LU | 0.7 – 7.0 |
| Crest factor | 12.4 dB | 7.9 – 19.0 |
| Dynamic range | ██████ | ██████ |
| Spectral tilt | ██████ | ██████ |
| Spectral centroid | ██████ | ██████ |
| Spectral rolloff | ██████ | ██████ |
| Stereo correlation | ██████ | ██████ |
| Mid/side ratio | ██████ | ██████ |
| Onset rate | ██████ | ██████ |
| Key clarity | ██████ | ██████ |
| Repetitiveness | ██████ | ██████ |
The full measured profile of Sleep: every median and range, plus all 61 playlists and unlimited Radar scans against them.
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See plansMedian integrated loudness of the measured previews: -19.0 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 2026-08-31: 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 18.1 dB, with individual tracks ranging from 13.7 to 22.9 dB. Higher PLR means more transient headroom; lower means denser limiting.
The lineup's median stereo correlation is 0.57. 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.
Sleep is a playlist operated by Spotify. The name is used to identify what was measured: public 30-second previews of the lineup on 2026-08-31. Phosphor Audio is not affiliated with or endorsed by Spotify.