The difference between composition and arrangement is:

1. Different references

1. Composition: the act of creating music.

2. Arrangement: an arrangement method combined with music production.

2. Different focuses

1. Composition: Focus on creation, which is the process of a song from 0 to something.

2. Arrangement: Focus on perfection, which is the process of a song from flaws to perfection.

3. Different concepts and functions

1. Composition: The composer can be regarded as the creator of the song and the source of the main contribution. The composer will record the melody he thinks of in staff notation Come down.

2. Arranging: Arranging is based on the melody, adding various sounds and chords to express the composition. ?Responsible for creating lyrics for the singer to match the rhythm and artistic conception of the song, and to control the number of words in the lyrics.