Žaburina, a multichannel sound performance commissioned by Ina GRM, has its world première at Sonic Acts. Based on Jonáš Gruska’s eponymous 2018 album, the work in constant progress explores the imaginary folklore music of underwater nations. Although all sounds are synthesised, they are heavily inspired by hydrophone recordings and mouth-organ music from East Asia. Polymetric rhythms are used as compositional tools that expand through the multichannel system to their own specific instruments or overlap in complex non-Western scales. The centre of the work is a system of rotating PA horns, traditionally used for announcements in Slovakian villages – repurposed here as a very specific psychoacoustic-enhanced sound distribution system.