Stelios Katsatsidis is a musician and teacher of the Alexander Technique. He studied accordion with Iraklis Vavatsikas at the Philippos Nakas conservatory in Athens. C. Leontis, D. Galani, G. Haroulis, M. Hatzigiannis, S. Giannatou, V. Dimitriou, E. Tsaligopoulou, G. Theofanous, Rita Antonopoulou, Gadjo Dilo, K. Hatzis, M. Aslanidou, G. Ploutarchos, M. Marmarinos ('Don Juan', 2016-17, House of Letters and Arts Onassis Foundation), Th. Atheridis - D. Papadopoulou (Alsos Theatre, 2022), B. Tsertos, G. Andreatos and others. Moving to England for studies he collaborated with various musical ensembles playing at venues and festivals such as Womad, Sfink fest(BE), Kings Place, BBC3 Radio, Union Chapel, Global (DK), Royal Northern College of Music, Vortex Jazz Club, Cine Teatro Avenida (PT), The Forge, Royal Academy of Music, Bloomsbury Festival, SOAS, Wilton's Music Hall etc.

From 2007 to 2011 he attended private lessons for Alexander Technique in Athens. He began his Alexander Technique teacher training in 2011 at the Center for the Alexander Technique in London with Ellie and Peter Ribeaux and graduated in 2014. He has attended private lessons and seminars with Nelly Ben-Or, Ted McNamara, Alex Farkas, Avi Granit, Noam Renen, Pedro De Alcantara, Shaike Hermelin. He has taught at the Syros Accordion Festival, SOAS World Summer Music School in London, Harrow Music Service, Reedblocks Accordion Festival, ATCA.