Noson Lawen is a long-running Welsh language television series, first broadcast on S4C in Wales in 1982.
The evening's performance is presented as a live variety show, and consists of family entertainment that includes comedy, music, dance, magic, choirs, sketches and other speciality acts, with a different host every week.
Guests have included not only Welsh-speaking performers like Dafydd Iwan, Robin Huw Bowen and John Ogwen, but international stars such as the quartet bond.
In the show's early years the audience were seated on straw bales, with the various performances taking place on a farm trailer.
The audience these days sit on comfortable seats, inside a specially made studio.