Bassist, guitarist and composer Kostas Theodorou (AKA Dine Doneff) has been an active member of the Greek music scene since 1983. That year he moved to Thessaloniki from his home village in Northern Greece, where he had abandoned school at the early age of 16, in order to devote his life to music.

He taught himself guitar, then electric bass and finally decided to focus on the double bass in 1989. For years he traveled throughout Europe in a mobile home, learning to play different musical instruments and styles.

Since his return to Greece, he has worked as a musician with many composers and performers, such as Mikis Theodorakis, Dionyssis Savvopoulos, Savina Yannatou, Theodosii Spassov, Ara Dinkjian, Arto Tuncboyaciyan and Nikos Kypourgos.

His own music is definitely jazz, but also clearly Greek, both with Balkan and Mediterranean influences.

Since 2014 he has been living in Munich.