Mini Serrano and Jojo Lavina-Maldonado, the two siblings who make up the Philadelphia duo Cold Court, say that they "grew up on Skrillex and 100 gecs," and I am fine with that. I'm psyched about it, honestly. I've been old for years . I felt old when people were talking about growing up on Fall Out Boy. Now, you're old, too. Welcome to hell, motherfucker. Cold Court make the kind of music that you could only really make if you grew up on stuff like Skrillex and 100 gecs. It's a twisty, fascinating noise-pop that seems to draw influence from anywhere and everywhere. The duo's new EP \ (^_^) / comes out next month, and we've already posted lead single " Burn ." Today, they share "Backslang," a freaked-out stomper with huge drums and guitars and with brain-scrambling synth-noises that jump out from every direction. It reminds me of MSPAINT, and I mean that as a big compliment. Here's what Mini Serrano says about it: "Backslang" is this indirect conversation between me and Jojo.…