The Athens, Georgia-based duo Jucifer — an alt-metal combo comprising Amber Valentine on guitar and her boyfriend, Ed Livengood, on drums — mixes up a lethal cocktail of punk, heavy metal and plain ol’ buzz-saw rawk, redefining “Southern gothic.” The couple self-released a debut album in 1998 titled Calling All Cars on the Vegas Strip, which was later picked up by Velocette Records and re-released in 2000. The lambs EP came out last year, followed by this summer’s I Name You Destroyer, which continues to showcase Valentine’s sex-kittenish purring over her thrashing guitar while Livengood beats the living shit out of his kit. This ain’t mint-julep music; rather, it’s pure Jack Daniel’s, sure to leave you bloodied and bruised but begging for more. Jucifer opens for the Melvins — word on the street is they’re a pretty good band, too — this Saturday, July 6, at the Bluebird Theater and Sunday, July 7, at the Fox Theatre. Isn’t love grand?