This is the original soundtrack for Dark Auction!

Featuring a total of 26 tracks.
The soundtrack is led by Yuko Komiyama
and Tsukasa Masuko,
with additional contributions from Yoshitaka Onishi, Takako Yumishima, and Ayumi Sumiki.

Select tracks also feature live performances by a jazz band.
Refined jazz sounds beautifully enhance the unique atmosphere of Dark Auction.

Jazz Band Performances
Piano: Hiroaki Idaka
Acoustic Bass: Shigeki Serizawa
Drums: Kenta Okamoto
Tenor Sax: Mitsuharu Ouchi
Trumpet: Atsushi Ozawa
Violin: Daisei Mii

More details on the official game page of Dark Auction Original Soundtrack ...