"So I am Jens Lekman, and you are New York City. It's nice to meet you." From the start of Saturday night's set at Webster, Jens led his seven-deep, white-clad backing band (six women and one DJ dude, as at Bowery last year, headlining the Beirut gig) in a show of great tunes and deadpan wit. Three albums in, Jens ...