I think what u are looking for is probably ---------Computer Science -----------
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.
