The Mushihimesama Cave Festival 1.5 Arrange Album, released in August 2011, contains the music for the special PCB board sold exclusively during Cave's online matsuri in May 2011. It features the original Mushihimesama soundtrack remixed mainly by the late Ryu Umemoto with support by Masato Sakurai.

Includes 13 audio tracks in mp3 and lossless formats.

Composed by:
Manabu Namiki (Basiscape)
Masaharu Iwata (Basiscape) (03, 04, 05, 06, 11)

Arranged by:
02, 03, 06, 07, 09, 10, 11, 13 by Ryu Umemoto
04, 12 by Masato Sakurai
01, 05, 08 by Ryu Umemoto, Masato Sakurai