I didn't think this warranted a thread of its own, and I couldn't think of anywhere better to put it, but this is how to enable a different fanfare for the Key Items in Emerald (As standard, it uses the same fanfare as normal items, which is a bit boring).
Firstly, Compile and Insert this script somewhere in your ROM, anywhere will do:
Code:
#dynamic 0xF00000
#org @main
fanfare 0x212
return
Obviously, you can swap out the track it plays for any other fanfare in the Emerald ROM, but this one happens to suit it rather well.
Note down this pointer, and the navigate to 0x271B60 and change the pointer to point to your new script. Voila! Job done.