Theodore Markopoulos (born May 27, 1988), known professionally as Th Mark, is a half Greek half Dutch record producer, DJ, rapper, songwriter, musician and director Growing up in Athens started composing music since the age of 11. Before Th Mark was inveted, Theodore was a music producer - rapper known as Soltempo and a electronic music producer - Dj known as K What amongs others. As Soltempo he released 3 free albums and 1 cd album distributed by a Greek record label. Due to obligations regarding to his contract with the record label he was forced to quit the Soltempo brand and made a fresh start in 2013 as the producer-composer and Dj member of an electronic music Duo called Redwirez (also called RWofficial) with Rena Tsan as the lead singer. In 2014 he decided to pursue a solo career as K What releasing the album 'Love is a Monster' in digital form. One year later in 2015 after producing for the Afropop artist Tosin Martyns decided to rebrand himself as Th Mark. In 2016 Th Mark distributed his first single 'Run' featuring Tosin Martyns. In 2019 released his debut Album 'Cyber Heart'.