That's the issue. If you haven't legitimately obtained Taylor Swift's Shake it Off, you can't argue the copy you made with youtube-dl is a permitted personal copy, in the US or anywhere with copyright laws.
If you did pay for it, then yes you can argue it's a permitted copy (just not in the UK).
That's the issue. If you haven't legitimately obtained Taylor Swift's Shake it Off, you can't argue the copy you made with youtube-dl is a permitted personal copy, in the US or anywhere with copyright laws.
If you did pay for it, then yes you can argue it's a permitted copy (just not in the UK).