Sonnborner is Nadja's 20th full-length release. The title track showcases their habitual slow-motion, atmospheric, ambient doom, with guest string players Julia Kent (Antony & The Johnsons), Agathe Max (Kuro, Mésange), and Simon Goff (Molecular) lending a certain neo-classical element to the song. The album closes with four faster, more aggressive tracks in the band's so-called 'grindgaze' style, as previously explored on their 2014 ep Tangled (Broken Spine/Tokyo Jupiter). A CD version of Sonnborner is also forthcoming with the Japanese label, Daymare Recordings.

Nadja is a duo of multi-instrumentalist Aidan Baker and bassist Leah Buckareff, active since 2005 and credited as one of the progenitors of the genres 'drone doom' or 'metalgaze'-heavy atmospheric music which combines the darkness and volume of doom metal and industrial with the textures and melodicism of shoegaze and ambient/electronic music.

The band has released numerous albums on many different underground labels-Alien8 Recordings, Daymare Records, Robotic Empire, Hydrahead Records, Gizeh Records, and Important Records, to name a few-and have toured extensively with performances in Europe, Japan, Russia, North and South America, and Australia/New Zealand, including appearances at such festivals as SXSW, FIMAV, Roadburn, Le Guess Who, Incubate, and Unsound.

Originally from Toronto, Canada, the duo now resides in Berlin, Germany.