I don't see the problem linking it, I was able to find Saori Kobayashi and Yumiko Takahashi performing the song (
https://www.youtube.com/watch?v=trqjPUTI1no) as part of Saori's new band, 茜-AKANE- (
http://www.akane-sky.info/about.html). I think that you just have to make sure in the comments that the information is uncredited