On her early records, Scout Niblett came on like the Cat Power of the British seaside–same mumbling drawl, though not as beaten down by living–but she managed to carve out her own niche on her last record, Kidnapped by Neptune (Too Pure, 2005). Her sultry mooning was replaced with a nervous energy, as if she were finally possessed of her own ideas and couldn’t wait to share them. The title track has the feel of a happy accident, a jam that quickly turned into a song, but Niblett is forceful as she lopes along, strumming a guitar over some crooked drums, knowing she’s onto something sharp. She dives headfirst into the weirdness with her latest release, the three-song “Just Do It” seven-inch (Too Pure): on “Dinosaur Egg,” she begs an unhatched dinosaur and a robot slave to come to life for a party, -but it’s a heartbreaker, not a joke. Niblett opens for St. Vincent. a 10 PM, Empty Bottle, 1035 N. Western, 773-276-3600 or 866-468-3401, $10. –Jessica Hopper