I guess it's time for technicalities that nobody cares about except for me:
So here's the thing: the overworld theme that you posted was never actually used in BS Zelda. You see, the Satellaview has a neat feature called SoundLink that could broadcast radio-quality music & voice acting via satellite to be played during gameplay. As such, the limitation was that you had to play the game during regularly scheduled intervals, so that the satellite could broadcast the data to everyone at the same time. (Link
) BS Zelda was one of those titles. (Link
As such, BS Zelda ended up using prerecorded orchestrated music for the soundtrack. If you wanna see what I'm talking about, here's a video from one of the original broadcasts
. You'll also see examples of the voice acting as well.
The version of the overworld theme you're using was actually discovered much later when hackers were uploading the ROMs to the Internet. These were leftover themes that were left on the cartridge by Nintendo for whatever reason. These hackers decided to put two and two together, and used these tracks when they made the ROMs available to the public.
This doesn't necessarily mean that your arrangement is bad or anything, but it probably needs to be renamed. If I were you, I'd probably change the title to "Unused Overworld Theme". But hey, that's just like, my opinion maaaaan. And yes, even I'm surprised I know this obscure information nobody cares about