This Mariusz Goli guy does sound quite impressive, but these recordings are a little too pristine to be "live on the street." I'm not doubting the man's abilities, but there's no way that he didn't take studio recordings and sync them up to these videos. There's not a single bit of background noise going on here.
Turn up your volume. There is plenty of background noise. Footsteps, luggage wheels rolling across the cobblestones, coins dropping in his case, talking. The sound also changes as the camera moves around relative to his amp.
He's obviously playing along with backing tracks, and looping, and it sounds like he has some fairly reverb-y processing going on in his signal path, which all makes it sound "better" than you'd expect if it was just a guy playing an unamplified acoustic guitar, but it all seems legit to me.
Of course, just because a guy happens to be playing music on a street doesn't mean that he lives out of a shopping cart and picked that guitar out of a dumpster, and it certainly doesn't preclude him from being any less of a "professional musician" than people we normally listen to (Anneke van Giersbergen, Danny Cavanagh, and Petter Carlsen playing on the street):
https://www.youtube.com/watch?v=ntr4vP4ppko
In fact, in contrast to the "sad state of affairs" where "no one stops to listen" on the street, I bet no one
here would have stopped to listen if it was just a link to a sound file of some guy who recorded an acoustic guitar CD. Everyone needs a gimmick these days!
