“I’m going through changes,” Jake Orrall chants on the slow-burning Sabbath cover that rounds out 2012’s Hypnotic Nights. As one-half of JEFF the Brotherhood Orrall, along with his brother Jamin, has made a name as one of the hardest working bands in the business. Between touring incessantly for nearly 10 years and managing their record label, Infinity Cat Recordings, the brotherhood has been busy. With seven albums to their credit, JEFF the Brotherhood’s gritty garage rock invokes psychedelic metal and punk-pop to recall hot nights and cool beers. In advance of their April 3 show at Subterranean, Chicagoist caught up with Jake to discuss the band’s latest changes including a major label release, performing as a quartet, and co-producing with Dan Auerbach.