Listen to Iolanta, Op. 69: Introduction online. Iolanta, Op. 69: Introduction is an Instrumental language song and is sung by Evgeny Svetlanov and Ussr State Symphony Orchestra. Iolanta, Op. 69: Introduction, from the album Tchaikovsky: Unknown Pages, was released in the year 2020. The duration of the song is 2:36. Download Instrumental songs online from JioSaavn.