Panagiotis Theodossiou was born in Athens in 1964. At an early age he studied piano with Efi Agrafioti and went on to study Harmony, Counterpoint, Fugue and Composition with Michalis Travlos, Michel Merlet and Theodoros Antoniou; Jazz piano and Improvisation with John Terezakis. He has also studied Theology at the Kapodistriakon University of Athens.
He is now a post-graduate student ("Composition for Instrumental and Vocal Ensembles") in Department of Music Studies of Ionian University, Corfu, Greece.
He is also a certificate music teacher in ABRSM.
He has been teaching Piano, Musical Theory, Harmony and Counterpoint at musical schools in Athens for many years. Other activities include his contribution as a co-founder and article-writer in the Greek musical magazine "Ta Moussika" and in the web magazine "TAR" (www.tar.gr ) while he is also a producer on the Greek radio.
He has been in charge of the Music Department and coordinator of vocal and instumental ensembles of "Geitonas" Educational Institutes (1995 – 2016).
Panagiotis Theodossiou is a member of the Greek Composers Union.
His composing activities includes many works for piano, chamber, choral and orchestral music and music for the big screen as well. His love for and interest in orchestration and jazz arrangement led him to write many symphonic transcriptions on classical and contemporary piano works and found small ensembles in which he participates as a pianist.
He also found many successful children and youth vocal and instrumental ensembles at schools and musical schools in Greece.
There is a public media interest all over the world about his activities. Interviews and features on newspapers and magazines , special programs on Radio etc. (Deutche Welle Radio, ERT, newsp. “Kathimerini” newsp. “Eleftherotypia”, “Difono” mag., “Jazz και Jazz” mag. etc.)
His works have been performed all over the world (Los Angeles, Boston, Philadelphia, Chicago, Hague, Warsaw, Nicosia, Athens, Patmos, Constantinople) by distinguished artists, from Greece and abroad as Michel Arrignon, Stathis Kiosoglou, Effie Agrafioti, Reyma Rayas, Katrina Zenz, Konstantinos Papadakis, Andrea Hemmenway, Lorenda Ramou, Iwona Glinka, Giannis Papagiannis, Giannis Sabrovalakis, Dimitris Magriotis, Kostis Theos, Spyros Kontos, Anna Mouzaki, Tania Sikelianou, Faye Pana as well as instrumental and vocal ensembles as "ALEA III" under the direction of Theodore Antoniou, "Greek Contemporary Music Ensemble" under the direction of Iakovos Konitopoulos and Valery Oreskin, Orchestra of Colours under the direction of Miltos Logiadis, "Athens String Orchestra", "The Bridge Quartet", "Philodos I &II" vocal ensembles, "Duo Pianismo", "Effie Agrafioti - Giorgos Kontrafouris" piano duo, "Q innegal" wind quintet with the collaboration of conductor Pavlos Sergiou, O Ihos os Ehei" ("Larissa Wind Quintet"), "Meteora Ensemble", "Trio Casals", "It" ensemble, "Duo Ficell", the alternative ensemble "Baroque & Blue" ("Ixnos Quartet"),etc.,
He has recorded many of his works on CD, and participated on CD recordings in Greek and foreign labels and institutions (Sarton-label, DNA –label, ERT, Deree College)