After studying music in his native Latvia and in Frankfurt (Prof. Helmut Rilling), Mark Opeskin has worked at the School of Music and Performing Arts in Frankfurt am Main and at Dr. Hoch's Conservatory as a lecturer in music theory since 1981.
In 1992, he used a sequencer program to create files for teaching ear training, and he founded a "listening laboratory" at the School of Music and Performing Arts.
He also composes and has served as a jury member, as well as working from 1990 to 2004 as the Choir Director of the 54 choirs in the Hochtaunus area, and he is a member of the Federal Music Committee of the Hessen Singers' Federation.
In 1984 and 1987, he was musical director of the International Latvian Music Festival in Münster and in 1990 he was the guest head conductor at the 20th Choral Song Festival in Latvia.
In his many years working with choirs, he has travelled to Australia, Canada, England and Sweden as a guest conductor. Mark Opeskin organises many concerts with his choirs, with programmes reflecting the breadth of choral music.