Who knew that a metal band formed by two kids in fourth grade could be this bone-rattlingly, gut-rumblingly brutal? OK, so it's true that Arturo Garcia and Guillermo Gonzalez, elementary school classmates and lifelong pals, are all grown up and 20-something now. But they started shredding together at the ridiculously precocious age of 10. (Side note: If any CD-R rehearsal recordings of these then-preteen rockers are collecting dust and scratches on a shelf in an A/V room somewhere, please send via same-day courier to Miami New Times, 2750 NW Third Ave., Suite 24, Miami, Florida, 33127. Gracias.) By their late teens, Garcia recently recalled, "We were both playing all kinds of different styles, we were in different bands, we were gigging musicians a lot, playing jazz, Latin music." But they soon focused on Cave of Swimmers (formerly known as the Tunnel), a two-man experimental sludge band that seemingly emerged out of nowhere to crush the skulls and liquefy the minds of Miami metal vets, including Orbweaver's Randy Piro, who has since proclaimed, "Literally, they're one of my favorite bands right now. Weird, awesome shit."