Okay, so imagine you have some toys that you really like playing with. But, sometimes other kids want to play with your toys too. That's okay, as long as they ask first and you say it's okay.
Copyright is kind of like that. It means that someone made something, like a song or a video or a book, and they want to make sure people don't just take it and use it however they want without asking first.
So, some really smart grown-ups made something called a copyright collecting agency. It's like a big group that helps the people who make things, like songs and videos, make sure they get paid when other people want to use their stuff.
The collecting agency is like a club. If you're part of the club, you have to follow certain rules. These rules are supposed to make sure that whenever someone wants to use something that belongs to someone else, they have to ask first and then pay them for it.
For example, let's say someone wants to use a song in a commercial. They can't just take the song and use it without asking first. They have to ask the person who made the song or their people (like the copyright agency) if they can use it. Then, they have to pay them some money for it, usually called royalties.
The copyright collecting agency helps make sure everyone follows the rules and that the people who make things get paid fairly for their work. That way, they can keep making new and exciting things for all of us to enjoy!