Want to share with you a neat tool I use to download music from YouTube. I'm into Salsa music/dance and more specifically older "Salsa dura" from 70's and 80's, some of which can be hard to find. Often these songs are on Youtube, but obviously in video format. So the trick is to separate the video stream from the audio, and convert the audio into an mp3 file that I can play with the PC or phone.
The app 4K YouTube to MP3 does all this in one easy step. There's a free version that works just as well as the paid one for single songs. The paid version can also do whole playlists.