In fact, ordinary mobile phones or clothing stores on the street prefer to play some songs or disco that are currently popular among the masses; such as "The Most Dazzling National Style" and "Can't Afford to Hurt" by Phoenix Legend; Or last year it was "Gangnam Style". These songs have a unique feature, that is, the melody is dynamic and catchy; you can even remember it after listening to it once, and the lyrics are relatively easy to understand. Therefore, it is very popular among ordinary middle-aged and elderly people, especially those with lower educational levels; or those who work in factories. The music played by each store allows the audience to self-anchor: the things sold by this store are in line with my purchase or consumption range, how dynamic you feel when you listen to this music, and how artistically artistic you feel when you listen to this music.