1. Have a good music foundation, preferably a master's degree.
2. Have certain music social practice, such as proof of any music activities organized or happened.
3. Have certain ability of music analysis and written expression.
4. It is best to be able to compose music, even if you can only write songs.
5. It is best to be able to make music------This is a reflection of the comprehensive ability of music.
6. It is best to have well-known personnel recommend to you.
It is recommended that you be down-to-earth and have some real skills, and then you will be safe when applying. Of course, if you just want to be a salesperson for a company, that's another story.