Re: TD12 sampling?
Do you mean a guitar-like sounding chord? Or just like a "AAAAAHHHH" sound in one of those pitches?
I have a TD-12 too and without running upstairs to check, try first going through the built-in Patterns, specifically the "Tap" group.. those are designed to be single-hit sounds... some of them might be what you're looking for. From there you might also check out some of the other Pattern groups, I think there's some guitar sounds in there.
I've been drumming for 35 years. I'm 34 years old.