6daEXIt Improvisation Ensemble

The improvisation classes I held in the Music Department of Aristotle University of Thessaloniki during the years 2005-09 were the basis for the foundation of 6daEXIt Improvisation Ensemble. Since its foundation in 2007, 6daEXIt is developed in one of the most important independent  improvisation and experimental music groups in Greece, with dozens of live performances and weekly meetings in Thessaloniki. 6daEXIt group plays free improvisation as well as verbal and graphic scores. We have presented scores by Karlheinz Stockhausen, John Cage, Carl Bergstrom-Nielsen, Michael Pisaro, Makoto Nomura, Liliana Rodriguez Alvarado, Vassilis Chatzimakris, Samuel Vriezen, Daniel Barbiero, myself and many others.

6daEXIt Improvisation Ensemble [2007 - ongoing]
Check our activities here.
6daEXIt performing Variations I by John Cage, together with Drosia Triantaki (movement)

6daEXIt performing Meeting Point by Karlheinz Stockhausen 

6daEXIt performing a free improvisation session during their 10-years anniversary concert in 2018


WHI ensemble

The improvisation and experimental music workshops I held at Nakas Conservatory Athens during the years 2015-17 were the basis for the foundation of ensemble WHI from me and 4 musicians. Since its foundation in 2017 WHI developed in an active improvisation group with performances of graphic and verbal scores and regular meetings in Athens.
Check our activities here.
WHI ensemble performing some pages from Treatise by Cornelius Cardew

I am an active member of the improvisation scene in Athens, organising and participating  several improvisation concerts and festivals.

Kyriazopoulos - Porfiriadis live in Chimeres Space Athens

Porfiriadis - Kordelis - Psaradakis live in Chimeres Space Athens

Porfiriadis - Chytiris - Kokkinaris live in Beton Athens

Porfiriadis Solo in Chimeres Space Athens

Since 2007 I convened a number of improvisation and experimental music workshops in academic and non-academic contexts in Greece and Cyprus. From 2014 to 2017 my improvisation and experimental music workshop was part of the workshop program of the Nakas Conservatory Athens. The members of the 2014-16 class presented some of the most demanding verbal and graphic scores like Edges by Christian Wolff, But what about the noise by John Cage, Paragraph 6 from the Great Learning by Cornelius Cardew in a concert in Nakas Conservatory Athens.


Seul à 3 
Between 2009 and 2010 I was a member of the improvisation trio Seul à 3, together with Natasa Mare Moumtzidou and Danae Stefanou.

Seul à 3 improvisation trio (Danae Stefanou, Natassa Mare Moumtzidou, Alexis Porfiriadis)
live in Thessaloniki, Mikro Theatro, 08.05.2009

Open Score Project

I was also a co-founder of Open Score Project. The group presented in concerts in Athens open form compositions that involved different levels of indeterminacy and/or improvisation (e.g. compositions by Earle Brown, John Cage, Karlheinz Stockhausen, Christian Wolff, George Brecht, James Saunders and Douglas Barrett). 


Between 2004 and 2010 I collaborated  with the austrian painter Manfred Url. We created the live music/painting improvisation project 'Klangbilder', which was presented in Austria, Greece and Serbia.


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