The whole Zeitgeister Music collective is heavily underrated, at least in my humble opinion. Their best-known act probably is Valborg, followed by Klabautamann. The latter are one of my favourite bands – not only of this collective, but in general. Another one of my favourite bands is Island, a now split-up project masterminded by Florian Toyka and Christian Kolf. They started playing a unique variation of progressive death/black metal (on Orakel), then developing into something that bears a closer resemblance to progressive rock (especially on Island), while still retaining some of the extreme metal influences (Enigma of the Stars). All of their outputs mean a lot to me, and they never get boring because of all the interesting rhythmic changes, the unique and memorable riffs, the vocals, the impressive song-writing skills, and so on.
I can practically listen to their stuff for several days in a row, but I guess the track I listened to the most is “Apex” off Enigma of the Stars. I particularly like the build-up towards the final part with its intense and interesting rhythm as well as the emotional density of the final part itself, during which the use of brass instruments is a great feature, giving this part its peculiar atmosphere.
Listen to it here: Island – Apex