First Impressions of the 12-String Martin HD12-28 at the Martin Guitar Showroom.. I've always loved Martin acoustics & have played hundreds of Martin 6-strings over the years, but never played a Martin 12-string until I was invited to check out their Nashville Showroom last month. While, most people associate the 12-string with Folk music, I LOVE acoustic blues on the 12-string, with some of my favorite players being Leadbelly, Blind Willie McTell, and of course, Stevie Ray Vaughn. I wanted to s