Nice one that German homeland "in disguise" mixtape by Kelv! He was so kind to send me one of them as well.
And... quite surprised to see mentioned Anna Varney's band (Sopor Aeternums & The Ensemble of Shadows)...
Several years ago, I used to listen to their album released in year 2002 "
Es Reiten Die Toten So Schnell (Or:The Vampyre Sucking At His Own Vein)"... but it's quite a few years I don't listen to it.
As far as I remember, one of my favourite songs in that album was this one.
That said... I understand it's a bit off topic not being german stuff but a few years ago (but better late than never!) I finally discovered an old italian/slovenian band named Devil Doll (not to be confused with an american band with the same name) which was active between around the second half of the 80s and the first half of the 90s... They used to mix more genres of music including classical and metal and, after listening to them, I am quite convinced that Sopor Aeternus might have been inspired by them but, personally, I do find the Devil Doll stuff of far superior quality.
an example... this is from what is considered their worst album (but maybe it's just the one I do love the most):