Does Sabi rock?

He’s back! After an absence of some months, I saw the familiar sight of the man standing by the roadside with a sign bearing the legend www.sabirock.co.uk.
Always dressed in dark clothing, often wearing a hat or hood, he was a regular sight on my daily commute into, or out of, the city until recently.
Once, I was alarmed as he stepped out from high up inside a road bridge under Mancunian Way but more often he’s to been seen one of the traffic light junctions on the A57, safely standing on the pavement.
I’ve never been able to get a photo, as I’m always driving when I see him, but he must be familiar to many.
What happens when he’s not appearing at a road junction near me? Is he on another of the city’s commuter routes when he’s not on mine?
I had assumed the URL would lead to a cut-price jewellery website or one of those earn-megabucks-while-sat-at-home-doing-nothing job adverts but it turns out to be a one-man musical mission.
There’s a page of text, some spoken auido and then music. No hint as to who this person is, whether the singer, songwriter, guitar player is the human signpost or any contact details. A mystery.
So does Sabi rock? Have a listen here. I’m not sure I understand any of it but let me know what you think.