Marco Quarantotto (HR) was born in Pula, Croatia. He earned his master's degree in jazz drums and percussion at the University of Music and Performing Arts - Jazz Institute in Graz, under the guidance of Professors Alex Deutsch, Manfred Josel, and Howard Curtis. In 2009, he moved to London where he continued his music career and established significant collaborations with a number of renowned artists. He has recorded over forty albums spanning jazz, rock, experimental, and world music genres. In 2019, he founded the trio ŪROK, releasing their debut album on Chant Records in New York. In 2020, he returned to Croatia and significantly intensified collaborations in the music and art scene: with various improvisers in the CRI Orchestra, with Nenad and Alen Sinkauz in the band Roj Osa, with artist Danijel Žeželj, with the Robert Mikuljan Quintet, Jazzistra Orchestra, and the Leon Brenko Trio.