Although he hails from Moscow, Id., judging by the ecstatic reception singer-songwriter Josh Ritter receives whenever he performs in D.C., you’d think he had roots nearby. The last time he came to town, in October, his rendition of “Homecoming,” off his latest album, The Sermon on the Rocks, had the entirety of the Lincoln Theatre dancing and clapping along. Ritter’s warm, melodic tunes will turn the ear of any Americana fan or casual listener of primetime drama soundtracks, but it’s the excitement that radiates off of him when he plays live that transfixes audiences. He’s the kind of performer who never looks tired and would play for four hours if weeknight Metro schedules allowed it. Like many musicians, Ritter has a special affection for 9:30 Club, having recorded a live album at the venue in 2007. During his two-night stint there this week, expect a combination of noisy sing-alongs from Sermon and quieter acoustic offerings from Ritter’s earlier releases, all delivered with honesty and an ear-to-ear grin. Josh Ritter performs with Elephant Revival at 7 p.m. at 9:30 Club, 815 V St. NW. $40. (202) 265-0930. 930.com.