Straight outta Portugal (the country that birthed the poet who gave this website its name, it’s probably worth mentioning) comes Test Tube, a netlabel with 10 sets under its belt, one of the most recent of which is Rui Gato‘s Chaosmos EP, three long-form tracks of slow-build drone (“M1,” 17 minutes), glitched-out field recordings and modified acoustic instrumentation (“M2 Extended,” 7 minutes), and a bit of granulated fire that slowly evolves into brittle minimal techno, then into a florid industrial wallop, before fading out with enough grace to erase the any memory of the recent unease (“M3 Final,” 11 minutes). “M1,” which starts in silence and masters a rich verticality necessary for repeat-listen ambience, is the keeper. Check them all out at monocromatica.com/netlabel (Monocromatica is the parent label of Test Tube). More on Lisbon-born musician Gato at elasticvoid.monocromatica.com.