Yoko Kanno composed a song with Izumi Makura featured in the fifth episode of Space☆Dandy .
According to the Space☆Dandy official website, a song in the episode 5 was composed by Yoko Kanno:
Title: 知りたい (Shiritai [trans: I wanna know]) / Izumi Makura x mabanua
Lyrics: Izumi Makura
Music: Yoko Kanno / Izumi Makura
Vocals: Izumi Makura
I believe it’s the song played around 8:35 in the episode 5.
It will be released as the 16th track of the original soundtrack on March 26, 2014.