Themes of art song, poetry and spirituality run throughout the second album by Korean-American violinist Danbi Um, performed with Finnish pianist Juho Pohjonen. Poème Mystique centers Richard Strauss’s intimate Violin Sonata, written in the year he met his future wife, and Ernest Bloch’s Second Violin Sonata, the title work of the album. By turns ecstatic, spiritual, and fantasy-like, in his …