By DCist contributor Abby Lavin I spent my first 40 minutes in the sold-out French Embassy auditorium last night, being blown away by who I thought was the French band Nouvelle Vague, but who actually turned out to be L.A. duo The Submarines. Confusions aside, I developed a big crush on Submarines front-woman Blake Hazard (turns out the feeling is mutual – she tells us she’s a big fan of sister site LAist). Armed with…