Guitarist-composer Fredrik Rasten joins the Berlin quartet Asterales to explore slowly shifting just-intonation harmonies in four movements where quarter-tone bass flute, synthesizer, double bass, and fretless electric guitar weave sustained microtonal textures into a resonant, deeply attentive study of modulation, timbre, and collective harmonic precision.

Two works written for a group of Australian performers living in Berlin--Jon Heilbron, Rebecca Lane, Jess Aszodi & Sam Dunscombe--by Australian composer and pianist Anthony Pateras, A Dread Of Voids developed for a residency at the Archipel Festival in Geneva after enduring a pandemic quarantine; and Patterned Language, composed for the Astra Chamber Music Society.

Two hauntingly beautiful works in microtonal composer and violist Catherine Lamb's "Prisma Interius" series, the first a duo with violinist Johnny Change and Xavier Lopez on the "secondary rainbow synthesizer", which channels the sound outside of the performance space as a generator of ambient sound; then a sextet of strings and winds with two secondary rainbow synthesizers.