1. Solfeggio, proficient in music theory, especially chords. 2. Have a certain piano foundation (level 4 or 5 is enough). 3. Excellent symbols. 4. Music of the Expo Group. 5. Understand the basic attributes of various musical instruments. 6. Creativity. The most important thing is to work hard. 8. As a composer in the 2 1 century, you must be able to use professional software such as CakeWalk and SONAR. Not necessarily, the arrangement is practiced, depending on the real kung fu. The arrangement major in the Conservatory of Music is quite difficult to take an examination of. You can take a look at the enrollment brochures of major conservatories (2 1 1 is relatively easy to test).