Greek pianist and vocal coach Christos Marinos has appeared in collaborative piano recitals and concerts in New York, Minneapolis, London, Vienna, Innsbruck, Athens, Thessaloniki and other European cities. He has premiered works by Greek and foreign composers, some written for and dedicated to him, in Europe and the United States. Christos has played for the studios of Metropolitan Opera singers, and for coachings at the Lindemann Young Artist Development Program. He explores and performs lesser-known art songs, writes music articles, translates music books, participates in summer festivals as a vocal coach and music director, gives lecture-recitals, and is an active music researcher. He is passionate about Greek Art Music, and his goal - and subject of his dissertation - is to present the vast and undiscovered world of Greek Art Song to singers and pianists, as well as to audiences, in the United States.

In 2017, together with his wife, opera dramaturg and stage director Antigoni Gaitana, they founded the Colla Voce Workshop for classical singers and collaborative pianists, the first of its kind in Greece. The workshop takes place at the Horto Festival in the summer and at the Musical Praxis Conservatory in Athens in the winter and spring. The workshop's first production was the Greek premiere of the opera Riders to the Sea by Ralph Vaughan Williams. During the Horto Festival, Christos teaches the class “Analysis, Repertoire and Interpretation” for classical singers and collaborative pianists, appears in recitals with singers, works as a vocal coach, plays for vocal masterclasses and is the music director of each summer's opera production. In 2002, he was appointed curator of the Jani Christou Archive in Athens for ten years, and in 2017 he became a basic contributor to the Archive of Greek Classical Composers. In June 2018, he recorded in Germany with soprano Mária Devitzáki the four books of Dafydd Bullock’s Stormlieder. He was worked as article writer at classicalmusic.gr and as classical music adviser at RadioArt.

Christos is currently a doctoral student in collaborative piano (studio of Timothy Lovelace) and teaching assistant at the University of Minnesota, focusing on vocal accompaniment and coaching. He has served as adjunct instructor in piano studies and as staff accompanist at New York University, from where he received the Master of Music (M.Mus.) Degree in collaborative piano (studio of Grant Wenaus). He holds diplomas in Piano Performance, Tonal Harmony, and Baroque and Renaissance Counterpoint from Conservatories in Greece, as well as the Recital Certificate in Piano Performance with honors from the Guildhall School of Music and Drama. Very significant to his development was his association with pianist, conductor, pedagogue and author George Hadjinikos, with whom he studied privately for ten years. In addition, he has taken cello, voice and conducting lessons, and has participated in masterclasses by Eteri Andjaparidje, Margo Garrett, Evgeny Kolmanovich, Diane Birr, Zouzou Nikoloudi a.o.​