A music score handwritten by Johann Sebastian Bach and owned by a Japanese music college will be put up for sale next month at Christie's auction house in London. It is expected to fetch as much as $3 million.

Ueno Gakuen in Tokyo's Taito Ward, the current owner of the manuscript, confirmed Wednesday the musical score, titled "Prelude, Fugue and Allegro for lute or keyboard in E flat major, BWV 998," will be auctioned on July 13.

The manuscript, believed to have been penned by the legendary composer in the 1740s, is one of only three complete handwritten musical scores by Bach to be put on the market in the last three decades, according to Christie's website.