Giving some of my favorite Osu songs here:
幽閉サテライト feat. Senya - Utakata, ai no Mahoroba
Nishiura Tomohito - Omoide no Teien
Rita - Hajimari no Toki
Marina - Towa Yori Towa ni
Tomohisa Sako - Zutto
Suzuki Konomi - Ginsen no Kaze
M2U - The Queen
Hatsuki Yura - Yoiyami Hanabi
Akiko Shikata - Katayoku no Tori
Rarely listening german heavy/power metal, I'm usually following Italian and French stuff, but this one has some potential imho.
(Added later today) Wuthering Heights, is probably gone forever, but at least they had good albums. They were best Danish band in my book. :(