Our occasional series “Secret History” features profiles of classic D.C. albums as a way of looking back at the District’s contributions to music over time. In this installment, we take a look at Tsunami’s Deep End (Simple Machines, 1993). A too often overlooked gem of D.C.’s ‘90s indie rock scene, Tsunami specialized in a heavily melodic, seriously catchy sound steeped in punchy rhythms and dueling guitars. Initially featuring Jenny Toomey and Kristin Thomson on…