It is the user who follows your account in the music player.

Fan is the homophonic pronunciation of "fans" in English. "Fan" means "lover of sports, movies, etc." Therefore, "film fan" means "movie fan", and "fan" can also be understood as "XX fan" or "XX groupie". "Fans" is the plural of "fan".

It turns out that "fans" are called groupies. But this term has long been abandoned by fashion. Many young people now love this new vocabulary and it has become synonymous with fashion. Fans are supporters.