According to the APOGEE Twitter account, Yoko Kanno composed an insert song for an upcoming Japanese movie.
【member】中島哲也監督最新作、 映画「渇き。」にて、’永野亮（APOGEE)’として劇中曲（菅野よう子作曲）の歌唱を担当しています。※なお、（APOGEE)付での映像作品参加は今回初となります！ http://t.co/GGDZHdqwLW
— APOGEE (@apogee_official) 29 Juin 2014
This song will be featured in the movie The World of Kanako (Japanese title: 渇き (Kawaki)). The official website doesn’t seem to mention Yoko Kanno yet.
The singer is Ryo Nagano from the Apogee band. Does this name sound familiar? He’s the singer of 2 songs in the Terror in Resonance O.S.T.
The music is credited Grand Func Inc. so Yoko Kanno may be involved in other pieces of music as well.