London based SN Variations was set up in 2014 to release music by 20th century and contemporary composers alongside improvised, electroacoustic music and sound art. Artists include Lucy Railton, Kit Downes, Jack Sheen, Chris Watson and Aisha Orazbayeva.

Constructive is its sister label set up in 2021 and has released soundtracks, avant pop and electronic music by artists such as Tujiko Noriko, Oï les Ox and Vladislav Delay. The labels will alternate shows every other month.