Though these look old-fashioned one can still buy "music bags", special satchels or briefcases designed to carry sheet music. They are easily distinguished from other bags because one of the handles is replaced by a metal bar over the other handle. Here's a picture of one sold now by the Cambridge Satchel Company:
Is there a practical advantage to this style of bag enclosure when transporting music? If so what is the advantage?
sheet-music
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