Sorry: that's tremeloa.. Yes, one string at the top, a sliding bar with attached pick. Watch the angle of the bar, or you'll be too sharp or flat.. Top string is barred and picked with a whiney slidey sound, and clusters of strings (chord clusters) are plucked at the bottom. I've determined HOW it's played. but now to play it so it sounds decent, that's another story. Have you tried to play one?