Face-melter

And then they launch into a face-melter by way of acoustics, playing so hard that one expects Thile's fingers either to spontaneously combust or at least start spurting blood.

Source: wiktionary

Can You Rock, an Indy-based live karaoke band, gives those face-melters some actual context.

Source: wiktionary

Whenever it is uttered by a character on the show, the first person in the room to dash off a searing face-melter of a musical run wins the round.

Source: wiktionary

“Wee-weewee [Psycho music].” “Marvin Glasscock! Dude comes in with the total facemelter!!!”

Source: wiktionary