Consisting of four canons and fourteen contrapuncti in D minor, for 10 points, name this work by Johann Sebastian Bach.
The term "Fragment X" refers to the theorized manuscript containing the final section of this work which was left incomplete at the composer's death. A recurring theme throughout the work is the number 14, which is thought to be representative of the composer's last name. Due to the open scoring of the work and wide range of melodic lines, this work is suspected to be composed for keyboard, though two portions of this work cannot be played by a solo musician on a keyboard instrument. The final unfinished portion introduces the B flat - A - C - B natural subject shortly before its abrupt end. Consisting of four canons and fourteen contrapuncti in D minor, for 10 points, name this work by Johann Sebastian Bach.
The term "Fragment X" refers to the theorized manuscript containing the final section of this work which was left incomplete at the composer's death.
The {Art} of {Fugue} [or {Die Kunst der Fuge}]