It’s not always wise to read too much into a record’s title, but in this case, it feels spot on. Gelatine, the debut EP from Looking Svelte, is a hot mess: thick and viscous, gluey and amorphous. It recalls at times the dense sounds of celebrated avant-gardists Gang Gang Dance and Purity Ring, along with the DIY aesthetic of WIFE (aka James Kelly of Altar of Plagues). But like the best of those projects, when you peel away the layers of reverb and distortion, there’s a pop song at the core. Looking Svelte is the stubbornly lo-fi, decidedly high-tech solo…