23-Ji No Ongaku

23-Ji No Ongaku

23-Ji no Ongaku (２３時の音楽, Music of the 23rd Hour?) is the second studio album by Yoko Kanno, with vocals by frequent collaborator Maaya Sakamoto. It was released on May 22, 2002. It is the soundtrack for the NHK radio drama adaptation of the book "The Other Side of Midnight".