The music of "Mere Sathiya Sun Payal Ki Runjhun" is a masterpiece that showcases O.P. Nayyar's genius as a composer. The song features a haunting melody that blends beautifully with the orchestral arrangements. The use of traditional Indian instruments such as the tabla, harmonium, and sarangi adds a rich texture to the song. The composition is built around a simple yet catchy tune that is both soothing and energetic at the same time. The way the music swells and subsides, perfectly complementing Geeta Dutt's vocals, is a testament to Nayyar's skill as a composer.