Putting on the old Sherlock Holmes hat for this one. According to iMusic.dk (from whom I bought this 4 track single), “Blue Anthem” is an album by Seiran Sougou Geijutsin released in 2020. I do see the Seiran General Art Institute being mentioned on the back of the CD. If you search for that on YouTube you will find this plus some tv performances. My guess is that this is anime territory, a subject that I know next to nothing about. Maybe a Soundtrack of sorts then? I have no idea. I do know that I find this lovely on many levels. I enjoy the music and the tv performances. And how could one resist a cover like this?
(My shot of said release)
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trinkelbonker 