Non-iTunes Music from iPhone 8 to 14
What's the best way to transfer non-iTunes music from an iPhone 8 to an iPhone 14. There was some guidance earlier that said a transfer would be possible only if I had the music on a computer. But if the music is already on my iPhone 8 shouldn't it be easy enough to just transfer it to a computer and then make the transfer to my new phone? Thanks.
iPhone 4s, iOS 9