It’s what everyone around here calls railroad tracks! In musical notation it indicates where there should be a break in the music. I actually just learned this term. I’ve been calling it by it’s popular name since the beginning of time and never thought about what it’s proper name might be. It’s one of those symbols where I know what to do when I see it so I just do it, no questions asked. Well, now I know.
You learn something new everyday!
Photo by Dayne Topkin