Though they've occasionally drafted an auxiliary member to add density or lace their songs with vibraphone, drummer Logan Kroeber and guitarist and singer Meric Long have become very good at being the duo known as The Dodos. Carrier, their new album, swims in sound, in spite of the outfit's limited size. Using Kroeber's restless, punctuation-heavy drums as his catapult, Long unfurls tides of acoustic and electric guitar, aggressively strummed chords threaded together by fingerpicking that recalls an old bluesman on Ecstasy. Carrier is a gray record, with its lyrics of darkness and trouble backlit by friends pounding at and singing away their worries. Opener Dustin Wong is a guitar wunderkind, a human arpeggio machine who turns one million guitar notes into tunes shaped like neon clouds. His most recent work adds bigger beats and more bass, turning his songs into the most delicate club anthems imaginable.