Well, if it's for a YT video then you can only use royalty-free songs for example, Jazzy Frenchy or The Elevator Bossa Nova. You can't really use major artist's songs or else you'll get copyright claimed. As long as you give credit to the royalty-free songs you'll be fine.
I don't know what you're using to make a project, but from my point of view if you're making a Scratch project then you can use any song (royalty-free or not) as long as you give credit.
It really just depends on what you're using to make the project and make sure to read the rules on copyright-claimed songs and to make sure that you can use them.
Information is very important because it helps us as a society make decisions. Decisions are impossible without information, and we are constantly seeking information in everything we do. Information is important in decreasing our sense of doubt and uncertainty as well.
Answer
When 2 people answer than there is a little crown that appears on both answers and you choose who gets it
Explanation:
Hope this helped