noun
sad tune; elegy; plaintive melody
Refers to a piece of music that expresses sorrow or melancholy. Can be used for classical elegies as well as any sad song or instrumental piece.
彼女はピアノで悲曲を弾いた。
She played a sad piece on the piano.
その映画の悲曲が心に残った。
The sad melody from that movie stayed with me.