What are the companies called that collect, edit, duplicate, and distribute printed music?

The Music Industry is containing and composing of not only companies but also individuals that making money by writing new pieces of songs, selling live shows and concerts, audio and video recordings and compositions of sheet music. These people called songwriters and composers, musicians, recorders, bandleaders, publishers, and producers, and etc.

But the companies that will be going to create, produce and distribute its musical scores are the  Music Publishing companies.

because of the importance of consistency in data collection. but we have to evaluate the resource or information, and not just accept what is posted online since information available on the internet is not regulated for quality or accuracy.

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