Listen to William Tell Overture: I. Main Theme online. William Tell Overture: I. Main Theme is an English language song and is sung by London Philharmonia Orchestra and Alfred Scholz. William Tell Overture: I. Main Theme, from the album Classical Music for Beginners: A Dummies Introduction to Classical Music, was released in the year 2014. The duration of the song is 3:21. Download English songs online from JioSaavn.