Konstantin Iliev (1924–2018) was a prominent Bulgarian composer and conductor known for his contributions to classical music and contemporary composition. His work encompassed various genres, including orchestral, choral, and chamber music, often infused with elements of Bulgarian folk music. Iliev's notable works include his orchestral pieces such as "Symphony No. 1" and "Symphony No. 2," along with operas like "The Seagull" and "The Pioneers," which reflect his innovative approach to blending traditional Bulgarian melodies with modern compositional techniques. His choral works, particularly those for mixed choirs, are widely performed and celebrated for their intricate harmonies and rhythmic complexity. Throughout his career, Iliev played a significant role in the development of Bulgarian music in the 20th century, contributing to the national identity of the genre while also engaging with international trends. He was an influential figure in music education, mentoring many young composers. Iliev's legacy lies in his ability to bridge the gap between folk traditions and contemporary classical music, making him a key figure in the evolution of Bulgarian musical identity.