Sheet Music Folder 4 Page Expand 52 Pages Capacity Detachable A4 Sheet Music Binder for Piano Keyboard Violin Cello 152 PAGES CAPACITY: Accommodating up to 52 pages of A4 sized sheet music, the sheet music folder is perfect for storing sheet music for your piano, keyboard, violin, cello, and guitar. 24 PAGE EXTENSION: The piano sheet music binder can be opened to present four pages simultaneously, avoiding any disruptions to your performance due to page turning. 3THICKENED OUTER SHELL: Featuring a thick and soft frosted outer shell that is waterproof, this sheet music folder ensures long lasting usage. 4LOOSE LEAF DESIGN: The sheet music binder features a detachable buckle design for a convenient and easy operation. This allows for easy installation and removal whenever required. 5MULTI PURPOSE USE: Besides serving as a music folder, this binder can also be used for other document storage, making it suitable for teachers, students, office clerks, and more.