Huge update - we solved our mystery! The lostwave community has officially identified the song/artist from our mystery video! Oddly enough, Chris Murphy of the band Sloan mentioned via Twitter/X that this sounded like... Well, by the band that this belongs to: "Just Passin' By" by Big Pict...

Thank you so much! I'll keep looking for this mystery guitarist. The search for this 'lost' song is growing quite rapidly, so we hope to solve it soon.

This is a weird question, and if it doesn't belong in this section, I'm happy to move it to general or repost it. I'm trying to help identify a mystery music video - unfortunately, we only have 2 seconds of this video - but what we do know is: 1. The guitar player in this video is playing a black Pa...