Spotify normalizes albums as a unit but normalizes individual tracks when shuffled or in playlists

Spotify applies two different normalization strategies depending on how music is being played. When an album is listened to sequentially, all tracks are normalized together as a group — meaning their internal relative loudness differences are preserved. A quiet track in an album stays quiet relative to its loud neighbors, as intended by the mastering engineer. When tracks are shuffled, or played as part of a cross-album playlist, each track is normalized individually to -14 LUFS. This distinction matters for album mastering: a mastering engineer can intentionally make some tracks softer than others within an album, and Spotify will respect that dynamic arc during album playback. However, the same quiet track, heard in a playlist alongside other artists’ tracks, will be lifted to -14 LUFS, potentially sounding different from how it sounds in album context.

Examples

Album mastered with track 1 at -16 LUFS and track 8 at -11 LUFS: during album playback, both are shifted by the same gain so track 1 stays 5 dB quieter than track 8. During playlist playback, both are independently brought to -14 LUFS.

Assessment

A mastering engineer intentionally masters an album’s closing track 3 dB quieter than the opener for artistic effect. Will this dynamic difference be preserved when a listener plays the full album? What about when a playlist listener hears just the closing track?