The Roland SC-88Pro's sound engine has an interesting bug.
If the Cheese Saw 2 patch is played at a high enough velocity, a scream sound is added to it.
This was fixed on the SC-8850/20, and apparently a fix was available for the 88Pro as well, but I'm not sure how common it was for people to apply it.
My SC-88ST Pro still has the bug. Here's a demonstration of it.
@MutedTrampet Lmao great one! Thanks for that, it made my day!