The main characteristics of music that are different from other art forms are that music has intuitive expressiveness, music has uncertain meanings, and music has the intervention of language information.

1. Music has intuitive expressiveness: music uses the pitch, strength, length, lightness, etc. of the sound to delicately present emotions that are difficult to describe in words and express what language means. The part that cannot be communicated.

2. Music has an uncertain meaning: Due to the non-intuitive nature of music, when it arouses emotions in the audience, it will produce different emotions based on the audience's different life experiences, artistic accomplishments, and personal interests and hobbies.

3. Music has the intervention of language information: In modern art therapy, music is used as a coordinating method, such as assisting painting, dancing, etc. Although there are no strict rules, the music medium can make it easier to present these symbols and metaphors.