Maybe I mentioned it before, but I’m a huge Touhou fan. I put too many hours into some of those games. And like some fans I have a decent collection of remix and rearrangement albums. Vivid Parasol is one I picked up years ago and didn’t see it on here already. Although I didn’t check some of those Touhou torrents that are 67,000 terabytes—it’s probably in one of those.
In short it's a pop-rock album but with uncommonly clear male vocals (by rumdarjun), which I do not hear often in doujin Touhou albums.