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Welkom to the sound worlds of 33 Tetragammon & Apollonius/Human Metronome.


Our music is a reflection of our descent into the inner realms of the Self. It contains more than sound: interweaved with the melodies and drones is a consciousness that guides the listener to deeper states of awareness. Enjoy this universal ride!

You can listen and buy our albums on Bandcamp. Our music is also available through CD Baby, iTunes, Amazon, etc.





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Watch our latest video called Fulfilment from 'Compassionate Being'.

Finally there! After all these years on the shelf this baby was finally dusted off: Live in the Ancient Past our live album from the E-day festival from 2009. And it's free. Check out Bandcamp.

Parting Ways With a New Album (1-2-15)

After having settled down in our new homes we had both set up our new studio’s. Firstly I needed to make some new sounds again. My soul was craving to be immersed in musical creativity again after a draught of about three months. And yes that felt good! I can honestly say that not being creative will stagnate everything in my life. Than it became time to revisit some older projects: I started to finish the mixes of ‚The Sea of Potentials’ (collab album with Dronny Darko) and am now in the mastering phase. I’m taking on the mastering




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Resonating Earth

Resonating Earth is our first album and also available as a factory pressed CD from Bandcamp and CD Baby.The soundscapes have a universal and accessible character. It contains influences from a variety of contemporary and ancient cultures.
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The Child Set Free

The Child Set Free is the first album and factory pressed CD by Human Metronome (now known as Apollonius). It has a zen kind
of feel to it mixed with ancient mesoamerican cultures. An album with lots of nature sounds and bamboo flutes. Available from Bandcamp and CD Baby.