the last subway singer

There are concerts of Independent Artists every night at midnight, at Chatelet Les Halles subway. Most of the time it's pretty good. But this time I was perplexed by the talent of this young man.
It was in winter, i still don't know his name. My last train was leaving and had to take it very quickly, I gave him my card but never called me back: so I broadcasts this video hoping to see him again