Sign In To Old Apple ID for iTunes

I just upgraded from an iPhone 6 to an iPhone 8. When loading my old phones data it appears that it is trying to load music that my kids purchased with their Apple ID's. I am now in iTune **** as the phone is asking about 140 times to sign in to the Apple ID's that I don't have the passwords for. How do I stop this. I'm assuming I need to get rid of this music but I don't know how.