The opening song of "Flash Girl" is "Dang Dang Dang Dang" sung by Circle 9. The lyrics of this song are very funny, and the repeated lyrics of "dang dang dang dang" seem very nonsensical and very brainwashing. Of course, the content of the lyrics is very consistent with the theme of the play. For example, "It is better to sprint high and fly high, and be the first to drop the hammer", etc., which are all consistent with the theme of the music.

The singer of this song is Circle 9. Circle 9 is a post-90s singer who graduated from Xinghai Conservatory of Music and mainly sings pop songs. Circle 9's real name is Shi Zhaoyi, and his representative works include "Echo", "Birds and Her", "The Name of Life", "Deep Sea Girl", etc. Circle 9 also won the 2019 "Super Girl" national finals championship. It can be said that she is a singer with a bright future.

"Flash Girl" is a TV series adapted from the movie of the same name. Its creative team is the same as the movie, and they are all the original cast, but the actors are different. The TV series uses a large number of new actors, so there are not many familiar faces, but these young actors are all very good-looking.

"Flash Girls" tells the story of students from the conservatory of music forming a folk band and competing against a Western band. The collision of folk music and Western music is extensively depicted in the TV series, and the charm of folk music is also shown to the audience. There are also three emotional lines in the play. The youthful emotions of boys and girls also touch the hearts of the audience, adding a lot of vitality to the play. Among them, the relationship between the male protagonist Li You and the female protagonist Chen Jing is the most attractive, but Chen Jing has a soft spot for his senior brother Wang Wen. The audience is also looking forward to what sparks will collide between them.