Born in Thessaloniki, Greece, he started with music since his childhood, playing drums. During his adolesence he discovered the guitar and started taking courses with a teacher. After graduating from high school, he went to Italy and got an A+ degree in Architecture from the University of Florence. There he met and made friends with Kyriakos Tzorginakis and Antonis Papadakis (Avaton), a group that explores new ways of musical expression. They indulged together in the secrets of guitar and they broadened their musical horizons in Italy, which was always included in the tours of important rock groups and of many prominent jazz musicians.
Theodor Mirisclavos has taken part in various groups of improvised music and has experienced important events. He completed his post-graduate studies in the Milan Polytechnic University and returned to Greece. From 1980 to 1986 he studied classical guitar at the National Conservatory, in the class of his friend Tzorginakis. In Thessaloniki he attends theory courses at the Contermporary Conservatory and the Musical College.
Next to music, he also deals with photography and receives a first prize in a national contest. In 1990 he takes part in a national composition contest, organised by the Ministry of Culture, where his work Roxane, for violin and guitar, receives an award and distinction. In 1994 his work Reflection—seven pieces for piano- receives an award in a contest for the composition of educational works for piano, organised by the Macedonian Conservatory.