Tip: You can use Lunar Magic's Overworld Layer 3 Editing system to edit or create your own layer 3 images (castle bricks, fish, rocks) and apply unique effects per level via the Layer 3 Bypass in the main editor.
Okay, this is a bit of a mess. I didn't make tinymm, but there have been so many authors of a lot of different versions and I couldn't find one. Take this down, okay, but if you're like me PetiteMM or whatever it was called did not work and then since some fool took tinymm off SMWC, I had to search the deep dark internet to try and find one. So yeah, here it is, no more searching for a really long time and downloading useless things looking for tinymm.
For future reference, you can find old deleted tools here. And if you are having problems with PetiteMM I would recommend asking in the Custom Music subforum. TinyMM was removed from the tools section for a reason (PetiteMM correctly handles triplets, doesn't desync between tracks).