John C. Reilly’s acting chops have landed him a diverse range of roles. He gave an Oscar-nominated performance as Amos Hart in Chicago, registered memorable quotes opposite Will Ferrell in Step Brothers, and performed as the unsettling title character on Adult Swim’s Check It Out! with Dr. Steve Brule. In the biopic spoof Walk Hard, Reilly proved he’s an equally versatile musician, nailing the role of Dewey Cox, a foolish pastiche of Johnny Cash and Bob Dylan. Reilly’s love of traditional country and folk tunes extends beyond that film, though, and he’s spent the past few years taking a band on the road to perform rootsy standards as John Reilly and Friends. In 2011, Reilly recorded duets with singer-songwriter Tom Brosseau and Lavender Diamond frontwoman Becky Stark, who will both join him at Sixth & I along with bassist Sebastian Steinberg. Reilly is right at home covering classics like Ray Price’s “I’ll Be There (If You Ever Want Me),” his duet with Stark, and in Walk Hard, his warm vocal twang complements his reverence for the source material. With guitar in hand, Reilly leaves his manchild escapades behind and assumes the role of a vibrant old soul. John Reilly and Friends perform at 8 p.m. at Sixth & I Historic Synagogue, 600 I St. NW. $25–$30. (202) 408-3100. sixthandi.org.