For a series about a singing competition, it's only fitting that the music consists of earworms.
- "My Clematis"
, the Round 1 song, is a serene duet between Sua and Mizi, which reaches its highest point when the two harmonize in the chorus. - "Sweet Dream", which plays in the prologue, is a catchy pop song resembling a Theme Tune for the show. It has even been stated by Vivinos and Sungil Do, the person in charge of the music for the series, to be their favourite!
- Round 2's "Unknown(Till The End...)" is a Rock love song which doubles as a Moment of Awesome for Till, who gets to bring his own guitar to the competition.
- "Black Sorrow" is a powerful song sung by Ivan in Round 3, which gets more emotional as it continues, especially when considering it's about Ivan's Unrequited Love for Till.
- "Ruler of My Heart" is a suave, classy love ballad that nicely shows off Luka's vocal talents.
- "All-In", Hyuna's solo, is fantastic and shows her rebellious nature and longing for freedom with its Badass Boast lyrics.
