Send your ROM via PM. The soundfont isn't a patch, so I'll just copy/paste it. It takes up space at offset 1,000,000 so you need space there. Important: (You may need to write this down)
Instrument 0 is scratching used in the title screen, giratina's theme, etc. and is NOT the drums
Instrument 1 is the drums
Instrument 2 is the piano
So when inserting, change drums to 1 and change pianos to 2 ;)
Gamefreak is stupid sometimes.