Up to now, Julianna Barwick has not often engaged in collaboration. Her process, which involves layering her voice with a Loop Station, is defined by solitude; a feeling that comes across in her music with full force. So it was a nice surprise to hear that she would contribute to the Rvng label's FRKWYS series of 12" records, which pairs contemporary and classic electronic artists. Barwick drew Ikue Mori of the seminal no-wave band DNA), who has ably kept up with new technology, evolving from trap sets to drum machines to computer software. The four extended, improvised movements that compose are familiar turf for Mori, but a whole new world for Barwick.