Miyuki Hatakeyama - Wayfarer (2018)

Genre: J-Pop
YouTube

Momoko Kikuchi - Tropic of Capricorn (1985)

Genre: City Pop, Synth-Pop
Favourite Track: #5 Dear Children
YouTube

Faye Wong - Fuzao (1996)

Who knew that the snack bar girl also made music.
Genre: Dream pop, C-pop
YouTube

Satellite Lovers - Sons of 1973 (1996)

Genre: Acid Jazz, City Pop, Neo-Acoustic, Shibuya-kei
YouTube

Lamp - 恋人へ (For Lovers) (2004)

Genre: J-pop, Pop
YouTube

Advantage Lucy - ファンファーレ (Fanfare) (1999)

Genre: Indie pop, Neo-acoustic
YouTube

The Pillows - Please Mr. Lostman (1997)

Genre: J-RockYouTube

Stella Luna - Stargazer (2002)

Genre: ShoegazeYouTube

Yuko Yamaguchi - Hotel Scandinavia (2001)

Genre: J-popDiscogs

Flying Lotus - Cosmogramma Alt Takes (2011)

Genre: IDMYouTube

Bohren & der Club of Gore - Midnight Radio (1995)

Genre: Ambient, JazzHeavy, slow, dark and a bit eerie.YouTube

Stretch Princess - Stretch Princess (1998)

Genre: Pop RockThe band released 2 albums and this is their debut album. Few of their tracks were featured on various movies and TV series.Favorite track : ShoesYouTube

Jazzy System - Answer Me (2020)

Genre: DowntempoFavorite track: Cosmic RadioYouTube

Sachal Studios' - Take Five

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Seaside Lovers - Memories in Beach House (1983)

Genre: City Pop
Quintessential summer album. Most tracks are instrumentals.
A track from the album (YouTube)

The Creatures – Sad Cunt (2000)

Genre: Alternative Rock, Trip Hop
Has a cool album cover doesn't it. 3 tracks , one original and two remixes. Give it a spin.
YouTube

Matthew Davis & The Notorious Bail Jumpers - Vicious Cycle (1995)

Genre: Rock
Didn't find anything on the band or Matthew Davis, not on RYM or any site for that matter. Despite the tacky album cover, the album is surprisingly very good. The band has released only two albums, one in 1995 and an another in 2016.
A track from the album (YouTube)