They are sometimes accompanied by backing musicians, the best known of whom are Tudur Morgan (bass guitar), Charli Britton (formerly of the Welsh rock band Edward H. Dafis; d. 2021)[1] and Simon Barton (drummers).

Both John Jones and Alun Roberts come from the village of Tudweiliog and they went to school together.

[2] Jones is a former blacksmith and JCB driver, whilst Roberts works for Cyngor Gwynedd.

They released their first album Yr Wylan Wen/Chwarelwr (The Seagull/Quarryman) in 1991, and received a gold disc by their label Sain in 1992 after selling 12,000 copies.

Their most recent album, Cyrraedd Y Cychwyn was released in October 2019 on the Aran label.