Gulp! My first post to a forum that consistently brings me 5-star info...
I've been looking at some notation books in a local music store and other places and I have not yet found what a long square bracket-like sign means. (Immediately to the left of «R.H») The top part is on the E line (of a piano partition) of the upper staff and the bottom part rests on the D line of the lower staff. Both parts are linked by a long thin vertical line.
Any idea of what it means and how I'm supposed to play?
Second question: any suggestions on a good notation reference book (preferably less than a 100...pages)
Many thanks!