Right now my go-to for falling asleep is Steve Reich's ‘Music for 18 Musicians’.

Much of dub, e.g. ‘Trojan Dub Massive Volume One’ and moreso Volume Two. Many good night driftoffs and subway snoozes were had to these tunes.

Sub Dub, Twilight Circus, The Kumba Mela Experiment's ‘East of the River Ganges’

Some classic downtempo:

• Wamdue Project's ‘King of My Castle (original version)’

• Groove Armada's ‘Inside My Mind (Blue Skies)’, ‘At the River’, ‘My Friend’

• Kinobe's ‘Slip Into Something More Comfortable’

• The Thrillseekers' ‘Synaesthesia (Alaska's Fly Away Dub)’ (mislabeled on Youtube)

• perhaps AIR's ‘Moon Safari’

De Phazz, Jazzanova, Fila Brazillia

Ninja Tune and adjacent:

• Funki Porcini's ‘What Are You Looking At?’, ‘Incredible Thing’, ‘How Banking Works’ (aka 'Belisha Beacon'), etc.

• The Cinematic Orchestra's ‘Man With a Movie Camera’ (it's busy in the middle, true to the film's visual narrative)

• Super Numeri's ‘Great Aviaries’

• Try Mr. Scruff, 9 Lazy 9, Daedelus, DJ Vadim, Eskmo, Bonobo, Skalpel. I don't remember who of them is more chill and who's more about breakbeats — been a while.

‘ECHOTOURIZM Vol. 3’, ШАΛАШ's ‘X’, plus other stuff on those two Bandcamp pages; and also Titmouse's Calendar's ‘House of Rest’ — these are all very cozy.