Celebrate Brooklyn ended with a weird, guitar robot bang Saturday night with a free St. Vincent show that about a quarter of Brooklyn came out for. Where were you, though? For once, your poor decision to skip something fun paid off, because the show is streaming in its entirety, at least the audio portion is. So while on the one hand you missed seeing Annie Clark’s awesome robotic dance moves and “Sigourney Weaver possessed by Zuul” presence, you can hear “Your Lips Are Red” turned into a 10-minute guitar freakout. So, Monday’s not all bad.