When I was studying music, I had a signature sound. That was easy though. I was the only one walking around with a resonator #Guitar, and often down-tuned or in an open tuning. Several days ago I shared some lyrics I wrote some time ago. Here's the moody minimalist guitar part that went with those, as far as I can remember, and yes, I'm playing this on a down-tuned open-tuning resonator. However, slight twist. It's a resonator telecaster with a single P90 in the neck position. A nice beastie!