Here is an orchestration and creative arrangement of Bach's Famous Crab Canon. The theme or canon reverses in the middle and plays backwards - Bach was a master of counterpoint. I added a 3rd line just for creative and contrasting development - I am not Bach! but it also reverses at the midpoint.
This is only 2:32 so Enjoy. There are 2 choices
1) Normal reverb and
2) in a cathedral.
Bach's Crab in a Cathedral