Magazine Holders: A magazine holder is a thin strip of plastic, with a long slot in it and three holes, to clip into your rings when you have a folder that has a 3-ring set of rings. The slot holds up to 11" tall music (not the taller A4 size).
You can open your music score flat, and slide it in through the slot, close it around the magazine holder, then clip it in the exact spot it needs to be in your concert programme.
It's also good for using borrowed music without holes, which you're not permitted to hole-punch.
And for those who just prefer not to punch holes in their music, especially when it will hit a music staff... and want the organizational convenience of a ring binder system.
It should be noted that while this WORKS, it's not without some fussiness and it's not perfect. Small unbound scores of a few loose pages can slide inward in annoying fashion; it works at its best with larger works that have a staple or bound edge. You can mitigate this with a piece of tape or paper clip, or staple.
