2. After determining the style, you should choose a matching instrument. This requires the knowledge of orchestration, and can also be based on experience. For example, if it is in a national style, it must be accompanied by national music and a piano can be added. If it's jazz, the piano, saxophone and drum should be in place. If it's electric, find some sound sources of electric sound.
3. pave harmony. First of all, you should design your harmony according to the melody, and have a general harmony change track. There are many routines, such as 245 1.
4. Then decide the big frame, that is, the specific sound type. There are two principles. First, don't let the accompaniment obscure the melody, and don't play. The implication is that your accompaniment should avoid the prominent melody; Second, set off each other, set off with accompaniment where the melody is thin, and make your music better.