After completing the Music school Vatroslav Lisinski in Zagreb Darko Domitrović continued his education at the P.I. Tschaikovsky Conservatory in Moscow and at the Hochschule fur Music und darstellende Kunst in Vienna. Since 1990 he works at the Academy of Music – University of Zagreb.
He is a member of the Croatian Composers' Society and the Croatian Society of Music Artists.
As pianist he won four first prizes in the piano competitions held in ex-Yugoslavia, and is a laureate of the International piano competition Citta di Senigallia in Italy.
He has performed in Austria, Germany, France, Belgium, Italy, Hungary, England, Japan, Israel, Sweden, Denmark, Spain, Finland, Russia, Poland, United States of America (Puerto Rico, N.Y., Hawaii, Florida, Ohio), Argentina, Chile, Uruguay, Slovenia, Macedonia and Bosnia and Herzegovina.
He performs regularly concerts and has recorded solo and as accompanist for singers and violinists. He is the author of music for musical Byron and many works for piano solo (cycle Pianobook...), vocal works (cycles Cervantes Songs, Lorca Songs...) and several pop music tunes.
Musical Byron is the winner of the Croatian Actor Award in the operetta/musical category 2018.