The Harpists
The Harpists are a pair of hitmen hired by the Axe Gang to rid of Coolie, Donut, and Tailor. Their weapon of choice is the (immensely over-sized) Guqin-Guzheng hybrid. Although capable of melee combat, they much prefer to use their special fighting style, the Deadly Melody. They can use their "Qi" to focus and mold the sound waves produced by the instrument into deadly forms, ranging from scimitars, to fists and even a small legion of sword-wielding undead in ancient Chinese armor. The ability is not purely offensive; it can be used to form a protective "wall" that actively blocks and forcibly repels incoming weapons. Practically with every string they play from their musical instrument, killer objects, usually invisible, would fly from it, aiming for the unfortunate target. However, most of their attacks seemed to originate out of strumming all the strings.
The first harpist appears to be the older of the two. He fights Tailor in his shop, luring him out to the courtyard where the second harpist awaits. He is better suited to unarmed close quarters combat, primarily using his long fingernails, but also uses the Guqin as a back up.
The second harpist appears younger and appears to be blind, due to his tendency to turn his face away from (and his ear toward) whatever he is focusing on, and an earlier scene in the movie when the first harpist had to assist him to his drink. But even blind, he seems to have excellent accuracy and skill with the Guqin at long range.
They are defeated by Landlord, who stands directly between them, directing their own attacks into each other. Then they overpowered and stunned, though not killed, by the Landlady with her Lion's Roar, effectively stripping them down to their underwear and forcibly hurling them into a wall. They crawl away terrified and are not seen for the rest of the movie.
Read more about this topic: List Of Kung Fu Hustle Characters, Villains