Since the late aughts, Helsinki-based multi-instrumentalist, linguist, and skateboarder Olli Aarni has released a steady stream of diverse and remarkably consistent recordings via labels such as Mappa, Longform Editions, Cotton Goods, Laaps and Superpang. “Koko maailma” constitutes a major new work in his discography, finding a fertile middle ground between what might be understood as his two primary compositional modes: organic/chaotic/aleatoric music and rule-based, longform works of minimalism. The source material for these compositions was recorded exclusively using the Serge system at EMS Stockholm, but the timbres that Aarni arrives at do not recall archetypal Serge music as most know it. Meticulous editing and processing of the material with an array of digital tools has resulted in music that preserves the erratic and cybernetic character of the Serge system but sounds totally unique unto itself. The first piece, “Ylhäällä,” has the sonic character of fireflies at dusk or ants in the dirt — mercurial, hypnotic, flittering, and scattering tones presented in the spirit of the best environmental music. “Alhaalla” functions almost like a zoomed out impression of what precedes it, with just intonation tuning applied to sine wave generators to create grid-like, harmonically rich, and surprisingly emotive drone music. Micro and macro — two pieces of music, two perspectives of a world.