Colornoise are Sonya Carmona (lead vocals/guitar) and Alison Alvarado (drums/vocals), and they are from Costa Rica. Polychronic is their second full-length record.
As you may have guessed from their name, they play experimental noise. There are aggressive guitars, steady drums, the occasional burst of bright keyboard tones, and just enough fuzz and distortion to make things interesting.
Here is Button, the first song on the record; I like the alternating guitar tones at the beginning and the thudding beat:
And Pieces, which blends some excellent menacing guitar with Carmona’s eerie vocals:
And finally, Weblocks, which might be my favorite, and is a heavy, droning meditation on net-censoring software and/or the hidden horrors of the Internet: