Every choir member will need a black binder for the concert. It can be any type of black binder.
Many of the choir members have purchased their black music folders from musicfolder.com. *Tip: If you order a folder with slight 'factory defects,' it's a little cheaper. We've found that the 'Choir RingBinder with Two Expanding Pockets - GRADE A Imperfects' is a great choice that's inexpensive, light, has a hand strap, pencil holder, and can hold a lot of music. But you can choose the folder that works best for you.