Bach’s Fugue in G minor, BWV 578 is nicknamed the "Little" Fugue to differentiate it from his later work, the “Great" Fantasia and Fugue in G minor. Both works are originally for organ.
The ever-popular Little Fugue has been arranged for a variety of instrumental combinations, including Leopold Stokowski’s wonderful version for orchestra. One of my favorite “classic” arrangements of the Little Fugue is this one by the Swingle Singers. Enjoy!