There's a big Spring Arts Preview in the Sunday Inquirer A & E section this week. (Yeah, I know its winter, but it kind of feels like spring outside, doesn't it?) Between the paper and philly.com, I've got a total of 21 pop music picks to click. One of them is Sharon Van Etten, who will release her third album, Tramp, on February 7, and play Johnny Brenda's on Feb. 10. Below, please watch her do "Serpents" from a Late Night with Jimmy Fallon earlier this month.