Windy City house DJ/producer Dan X has been in the mix since the late ‘90s. To date he’s released tracks on esteemed labels including Classic, Robsoul, Aroma and Doubledown. Plus, he’s served as half of two production duos, No Assembly Firm and Dirty Sole. Now making music under the alias System 5, he’s a partner in the new Bristol-Chicago Apollo Music Group startup along with Chitown’s DJ Heather and Bristol’s Lil’ Mark. System 5’s Reflection EP is the endeavor’s debut release, and we’re pleased to world premiere “Obsession” from the four-track effort. The classic-sounding house jam packs a tight, no-nonsense groove, crisp percussion and sublime synth stabs. Listen to the premiere below and check out the full EP on October 21.