(This used to be Chicago Guitar Lessons, search using this name on Unilocal). Maybe he changed the name after receiving 3 horrendous reviews here? Anyway, it’s a different name, but the same drunk, violent instructor, Michael Powell. Yes, he really threatened me with a pistol after I requested a resolution on a botched repair. My original review is below: I’ll begin this review with the same explanation I gave the police when they arrived at the scene. Mike Powell threatened me with pistol. Briefly, the story. I brought my guitar in, to have a new nut installed. Mike damaged the guitar and improperly fitted the nut. I called him by phone. He threw a mini-tantrum. I stopped by the shop, and asked politely if anything could be done about my damaged guitar. I immediately took notice of Mike’s gin-blossomed face and unfocused eyes. Visible but unconfirmed drunkenness. I asked what could be done about this issue, and Mike lashed out with a string of obscenities.(Use your imagination). Then, he grabbed my bicep, and, in no uncertain terms threatened to shoot me with his pistol. I exited. Fast. As I stepped onto the front porch, he slammed his glass door, shattering the glass everywhere. He has been reported to the police. He has been reported to the Better Business Bureau. He’s a total freak. For god’s sake, never come into contact with this shmuck.