1. A similar music search method, comprising: extracting an audio feature value from a compression zone of a music file and generating a music content summary using the extracted audio feature; classifying a mood and a genre of the music file using the generated music content summary; extracting a similarity feature for a similarity retrieval from the music content summary; storing information on the classified mood and genre and the extracted similarity feature information in a database; receiving a query music; detecting a mood and a genre of the query music; measuring a similarity between the query music and music files that are identical in the mood and the genre to the query music by referring to the database; and retrieving the similar music with respect to the query music based on the measured similarity.