Anhrefn has been played on NTS shows including Idle Hands w/ Zane Landreth, with Nefoedd Un Uffern Llall first played on 5 May 2021.

Anhrefn was an influential Welsh punk rock group of the 1980s and 1990s. The band has been described as a Welsh version of The Clash.

Anhrefn (Welsh for "Disorder") formed in 1982, and initially sang only in Welsh. The band was not supported by Radio Cymru or Welsh-language TV channel S4C, beyond an occasional interview, and bassist Rhys Mwyn became known as an outspoken critic of the Welsh pop industry. Mwyn (born Gareth Rhys Thomas) set up his own Recordiau Anhrefn label…