Listen to Tristan and Isolde: Act I - Prelude online. Tristan and Isolde: Act I - Prelude is an English language song and is sung by St. Petersburg Symphony Orchestra and Alexander Dmitriev. Tristan and Isolde: Act I - Prelude, from the album The 100 Best Classical Masterworks: Great Opera Moments, was released in the year 2011. The duration of the song is 3:44. Download English songs online from JioSaavn.