The shows coming to San Francisco this week give us an excuse to talk about some of our favorite music of 2007. Perhaps the best album we've heard this year comes from a Texan named Annie Clark, a.k.a. St. Vincent. She's a seasoned touring guitarist for Sufjan and the Polyphonic Spree, but at only 24 years old she just released a debut album that's sophisticated, brave and artistically mature enough to make you think that......