Lidia-Maria Koshevaia was born on November 11, 1994 in Ulyanovsk, Russia.
She studied composition at the St. Petersburg Musical and Educational Tishchenko College.
In 2020 she graduated with honors from the Gnessin Russian Academy of Music (under the direction of Professor Alexey Larin).

Since 2021, she has been a member of the Union of Composers of Russia.
She received a laureate degree different international and all-Russian competitions for composers, including the International Antonin Dvorak Composition Competition in Prague, All-Russian competition "Choral laboratory. XXI century", and competition of composers of the STAM-festival as well as other competitions.
The winner of Moscow Art Theatre Award in nomination "Contemporary academic music".

The music of Lidia-Maria Koshevaia has been performed in Moscow, St. Petersburg, Kazan, Nizhny Novgorod, Voronezh, Gatchina, Nicosia (Cyprus), and Pretoria (South Africa).
She is a composer of music for different performances and readings staged in Moscow and St. Petersburg.

Lidia-Maria has taken part in various musical and theater laboratories:
3rd International laboratory of contemporary music for composers (2022, Saint-Petersburg), "CoOPERAtion" (2021, Moscow), "Composer's Readings" (2021, Nizhny Novgorod), "II and III Acoustic Readings" (Center of Drama and Directing, 2019, Moscow), "Laboratory of Contemporary Music" (Nicosia, Cyprus, 2018), "Choral Laboratory" (2017, Gatchina) and others.