Chantal Passamonte used to be a publicist at Warp Records. One day, Chantal Passamonte died and alter-ego Mira Calix was born, having inherited Passamonte’s DJ skills but dropping the publicist day-job. She’s been creating bleak and oppressive electronic soundscapes ever since.

The mechanical-sounding grind that makes up much of her sonic palette can be offputting; it’s not often that you can use the adjectives clinical and dirty to describe the same sound. Calix’s “Sparrow” is an amazing mood piece; sordid is the word that comes to mind. Much of One On One, like the work of compatriots like Andrea Parker, consists of claustrophobic netherworlds like this. There aren’t many people plying this sort of dark, grinding atmospherics as their trade, but Calix is at the top of the heap.