Grumbling Fur has been played over 20 times on NTS, first on 19 December 2013. Grumbling Fur's music has been featured on 20 episodes.

Grumbling Fur are a neo-psychedelica duo from the UK consisting of Daniel O'Sullivan (Guapo, Mothlite, Miasma & the Carousel of Headless Horses, Æthenor, live Sunn O))), etc.) and Alexander Tucker (Imbogodom, Unhome, Ginnungagap, etc.).

They have released two albums so far, the 2011 debut Furrier on Aurora Borealis and the 2013 follow-up Glynnaestra on Thrill Jockey. On Furrier they were assisted by David J. Smith (Guapo, The Stargazer's Assistant, Amal Gamal Ensemble, etc.), Antti Uusimaki (Mothlite, PANIC DHH), Jussi Lehtisalo (Circle, etc.) and Eetu Henttonen (Lusiferiinin Armosta).