When the enigmatic rock group Animal Collective released Merriweather Post Pavilion in January, it immediately became an early frontrunner for 2009's best record. Months later, it remains the year's most wildly imaginative release, with a strangely infectious stew of tribal rhythms, pulsing synths and shimmering vocals. Here, Animal Collective stops by Washington, D.C., for a full concert — a show webcast in its entirety at NPR Music. In addition to live streaming, the performance from the 9:30 Club will remain archived on this page and in the Live In Concert podcast.