Unless things change in a hurry, not many people are likely to look back on 2025 and say, “that was a great year.” But Fredrik Rasten could justifiably make the claim. The Berlin-based Norwegian guitarist will release at least four albums this year, each revealing a different facet of his engagement with just intonation tuning. He’s also on the road this summer with Alasdair Roberts. In 2021 Rasten, as a member of the folk group Völvur, accompanied Roberts on the album The Old Fabled River. They’ve since put together a duo set consisting of long, slow Scotts ballads, which should be the subject of an album of its own out next year.
Strands of Lunar Light was realized by another duo. Rasten is joined by Belgian multi-instrumentalist Ruben Machtelinckx, who is also…