Thodoris Ziarkas is a double bassist and composer from Greece. Growing up with the sounds of Greek folk music mainly focusing on local instruments such as the lyra and tsambouna, Thodoris evolved through different trajectories to discover the double bass, which led him to study jazz at Middlesex University in London, and film composition at Codarts Conservatoire in Rotterdam. Based in London since 2009 he is the co-founder of the psychedelic-jazz group Valia Calda which they co-lead together with his brother Nikos Ziarkas. Additionally he leads his own trio under the title of Collection of Sand and his recent work features the solo performance [Reconstruction] for double bass, electronics and film. Current collaborations include Nancy Mounir's Nozhet El Nofous, Tom Sochas trio, Vanessa Kourtessi, and the hacked-Rebetiko duo AMAN!!! with his longstanding collaborator Tasos Stamou.