A dash up the stairs at La Nouvelle Scène brought me to the venue’s smaller, more intimate Studio B, which was perfect for singer-songwriter Emma Frank’s entrancing original music. The Brooklyn-based Franks, 30, was a sylph-like performer who invited listeners in with poetic, revelatory lyrics and songs that soothed despite their unexpected contours. Meanwhile, her backing band supplied an intriguing mix of rugged beats (thanks drummer Jim Black and bassist Martin Heslop), restrained but occasionally subversive piano (thanks Elias Stemeseder) and atmospheric trumpet (thanks Simon Millerd). Songs such as Best Friend, Magnolia and Ocean Av, all on Frank’s new album which is to drop at the end of this week, were evocative and gently moving.