Heavy metal is the Protestantism of music: it splits into ever-smaller sects, with their devotees often anathematizing all others. You have speed, thrash, death, grind, doom, sludge, glam, goth, stoner, symphonic, prog, metalcore, grindcore, deathcore, etc. ad infinitum forever and ever Amen.

But did you know there’s a sub-genre called mathcore? Mathcore, according to Wikipedia:

is usually filled with discordant, somewhat technical riffing, complex time signatures and song structures, and passionate, energetic vocals. Songs played by bands of this style tend to vary from mere seconds in length to over 15 minutes and rarely feature a conventional verse-chorus song structure.

Case in point:

Now, even I find this virtually unlistenable.

(Note: this post doesn’t replace our regularly scheduled Friday metal.)