The "pleasantly aggressive folk duo" Nervous but Excited offers dead-on harmony: two songwriters (Kate Peterson and Sarah Cleaver), two singers, two guitars, a mandolin, a violin, a few harmonicas, some vaguely choreographed dancing, and a lot of laughter. Their original repertoire ranges in topic from smart, introspective narratives to the tactfully political, and they still dabble in the love/post-love variety of song every now and then. Since 2004, Nervous but Excited has released four full-length albums and four EPs, and their endless passion has landed them on stages with folks like Ani Difranco, Iron and Wine, Utah Phillips, Ben Gibbard, Catie Curtis, and Cheryl Wheeler, to name a few. They're bringing a new album, "You Are Here," that so far has been available only at their live shows.