This music is the Toccata in c minor by J.S. Bach composed around 1717.
Bach's works are listed chronologically by BWV number.
Bach has a work listed as "BWV 911".

Someday I would like to use the 9 minutes and 11 seconds of
this Toccata as backgroud for a collage of nine-eleven events.

This is J.S. Bach.
Did Bach know about nine eleven?