Taking into account what has just been said, in order to download YouTube videos as music files, the first thing you need to do is to download the YouTube Music app to your mobile device, using the links I have just provided or performing a quick search in Play Store/App Store. The download of songs is only allowed from mobile. The service can be used both from a computer, via the browser, and from smartphones and tablets, via the official app available for Android and iOS/iPadOS.

Subscription to YouTube Music costs €9.99/month (or €14.99/month, opting for the family plan for 6 people) after an initial three-month free trial, with no obligation to renew.

In case you’ve never heard of it, it’s a music streaming service officially offered by Google, which, in exchange for a small monthly fee, allows you to download music offline and play all the songs on the famous portal for watching and sharing videos, even in the background and in audio-only mode (so as not to waste data traffic). The first system I suggest you consider in order to download YouTube videos into MP3 format is YouTube Music. 6# How to Convert YouTube Videos to MP3 with iPhone and iPad YouTube Music- A suggested paid solution

Convert youtube video to mp3 on iphone