Before a single note hits your ears, the space it was recorded in has already made a decision about how you'll feel. From Phil Spector's Wall of Sound echoing off a cramped LA studio to the cavernous reverb that made '80s drums sound like they were recorded inside a sports arena — reverb isn't just a setting, it's a secret co-writer on some of the most iconic records ever made. This episode, we pull back the curtain on the rooms, plates, springs, and algorithms that shaped entire eras of music without ever getting a production credit.