The theme song "Xiao Li Flying Knife" and the episode "The Shadow of Knife Light and Tears" were written by Lu Guozhan, composed by Gu Jiahui and sung by Tam. The second theme song "Magic Swordsman" was written by Jiang Yu, composed by Gu Jiahui and sung by Tam. TVB later merged the two episodes of this drama and renamed it "The Passionate Swordsman of Xiao Li Flying Knife" and sold it on VCD/DVD.

Theme song: Xiao Li Flying Knife

Lyrics: Lu Guozhan

Composer: Gu Jiahui

Singing: Tam

Lyrics:

It's rare to have a good skill

Love can't always break through

Love can't break through

Love can't break through

Swinging swords without results

Running water can't stop cutting < I'm not afraid of

sadness at parting

how frustrated I am in life

Why did you choose me

wielding a sword to break the Covenant

Knowing each other is doomed to be a big mistake.