Fiverr Community Forum

Licenses for your music work

Hello. I’m looking at selling background music for video games, apps, podcasts, etc. I’ve noticed a lot of sellers offering a “standard”, “premium” or “exclusive” license. I know the difference between the three but i’m wondering where I can acquire a license? If a buyer asks me for a premium license, how would I provide them with that? If the buyer wants copyright, how can I provide them with that? Also, how do you give them a “standard” license?
Maybe these are silly questions but there really is no information online for this that I could find. Any help or suggestions is greatly appreciated!