Marilena Chrysochoidi, born in Athens, Greece, hails from a family with roots in Asia Minor, surrounded by a rich tapestry of musical influences. Her journey in music began at the age of 7 when she started playing the piano. A musical high school expanded her repertoire to include the tambouras and ignited her passion for the traditional Greek instrument, the santur. Concurrently, Marilena pursued voice lessons, later specializing in classical singing under the tutelage of Marina Krilovici. In 2014, she earned her opera diploma with distinction under Cellia Costea.

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Immersing herself in the performing arts, Marilena graduated from the Drama School of the Greek Art Theatre "Karolos Koun" in 2015 and further honed her skills at the Opera Studio of the Greek National Opera in 2016.

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In 2021, she graduated with a Master of Arts in classical singing from the Royal Conservatoire of Antwerp under Andrew Richards. Marilena's academic journey included directing two diverse performances, showcasing her versatility: "Therapeutic," a musical exploring mental health, and "Δέησις," an interdisciplinary tribute to Ancient Greece with songs based on ancient Greek music and scenes from classical tragedies.

The directing path unfolded during Marilena's internship at the Olympia Municipal Music Theatre “Maria Callas” in Athens, where she served as an assistant director under the guidance of George Petrou for Mozart’s Idomeneo.