Sleep is a functional music category designed to support falling asleep and sustaining restful, uninterrupted sleep. It favors extremely low stimulation: slow or absent pulse, very soft dynamics, long envelopes, and timbres that avoid sharp transients.
Stylistically, it borrows from ambient and new-age traditions (drones, gentle pads, soft piano), environmental and field recordings (rain, waves, wind), and unobtrusive tonal fragments. Production emphasizes smooth spectral balance, minimal movement, and gradual change so the listener can disengage without sudden arousal.
In the streaming era, “sleep” became a distinct, curated space: long-form tracks and continuous mixes, colored-noise beds, and sparse neoclassical motifs, optimized for bedtime routines, night-long playback, and bedroom acoustics.