Listen to "Ave Maria" by Franz Schubert on Last.FM and YouTube. The song was originally titled "Ellens dritter Gesang" or "Ellen's Third Song" and was part of Schubert's Opus 52, which is a collection of seven songs from the epic poem "The Lady of the Lake" by Walter Scott.
The "Ave Maria" version on Last.FM is an instrumental performed by Anthony Newman as part of his 1991 album "The Wedding Album" which also features 28 tracks of music from many other classical composers such as Felix Mendelssohn, Johann Sebastian Bach, Georg Friedrich Händel, Ludwig van Beethoven and Richard Wagner.
One version available on YouTube is sung by American soprano Barbara Bonney as part of her 2008 album "Ellens Gesang III, D. 839, Op. 52: No. 6 Ave Maria."