[GAMEPLAY] Gamebreaking Pentakill Karthus bug!

This might affect all karthus skins, I don't know. I was just noticing that when I do the dance, he sings after the animation. He leans back, opens his mouth, shakes his head . . . then a second or two later sound comes out.

This is completely broken and will result in bad tempo. How can he be a band member if the sound doesn't move with his mouth?