The Australian duo of Olivia Hally and Pepita Emmerichs (the titular Oh and Pep) built a steady buzz off three EPs built around bluegrass, folk and tight pop. That momentum led to last June’s Stadium Cake, the pair’s full-length album released by Dualtone that layers violin, mandolin and other Appalachian staples into driving melodies and exultant harmonies. Paste photographer Sarah Midkiff caught the group’s recent NYC stop at Mercury Lounge, where Oh Pep! brought a stomping, earthy energy to the Houston Street venue. Oh Pep! is on tour in the U.S. through early March before returning to Australia.