Here's why:
* Music in Pokemon games is hardcoded: The music you hear in Pokemon games is directly programmed into the game's code. It's not something you can change with simple codes or cheat codes.
* ROM hacking is a different thing: You might be thinking of ROM hacking, where people modify the game files to change things like music. This is advanced and requires technical skills.
If you want to listen to different music in Pokemon Black:
* Find custom ROM hacks: Some fans have created ROM hacks that include custom music. You can search for "Pokemon Black music ROM hack" online.
* Use external music players: You could play music from your computer or phone while playing Pokemon Black.
Please be aware: Downloading or using ROM hacks can be risky, and it's important to make sure you're getting them from reliable sources.