Silvia Kastel has been a fixture of the Italian underground since her precocious teens. She's also clocked up miles in Control Unit with Ninni Morgia. Both solo and in her work with others, Kastel has explored the outer limits and inner workings of no wave, industrial, dub, extreme electronics, free rock and improvisation, with 2017's Air Lows both her fullest and most refined offering to date, a work of vivid, isolationist electronics.