Fraufraulein’s music is immersive. Anne Guthrie and Billy Gomberg beam themselves, and us along with them, Quantum Leap-style directly into multiple environments in medias res. Through the clever employment of field recordings, they transport us to a hurricane-addled beach, performing a voice/piano duet as driftwood missiles careen through the air. In another “episode,” the manipulation of small objects conjures up the intimacy of a water garden filled with windchimes. Partners in both life and art, Guthrie and Gomberg are also consummate solo artists. He is a master of spike-textured drones, while she explores the intimate properties of physical entities. Like a child tends to resemble one parent while borrowing subtle traits from the other, Solum identifies more with Guthrie’s electroacoustic tendencies than it does with Gomberg’s electronics. This is in stark contrast to 2015’s Extinguishment, which felt a little more balanced between those two modes. Both approaches work, yet Solum feels more meticulously crafted and nuanced. Careful listening unveils multiple subtle tones and textures, and each piece is an adventure for the ears.