[A Channel] Uchiyama Yumi
Humming Girl - ED (TV-size) OST A Channel - Yuuki Aoi, Fukuhara Kaori, Kotobuki Minako & Uchiyama Yumi 01:28
Harukaze no Kagaku (off vocal) OST A Channel - Yuuki Aoi, Fukuhara Kaori, Kotobuki Minako & Uchiyama Yumi 04:24