Colliding Numbers

After hearing a nice simple melody played on a piano, I asked him to play a inverse of it with his other hand at the same time. I heard the effect. I started to think that if we can collide light to make particles split then we should be able to collide sound and also collide anything else like numbers or math formulas. I couldn't exactly see how colliding numbers would do so until I tried basic math formulas pointed at each other and saw a stream of numbers shooting in different direction as if they were acting like fundamental particles. 8s always flow away at 90 degrees, while 6 more at 45 degree angle.