The term Noson Lawen translates roughly into English as Fun Evening. The programme takes the form of a variety show, with performers including singing duets, sketches, choirs, comedians etc and with a different host every week. Presenters have included Gillian Elisa, and guests include 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 various performances taking place on a farm trailer. Today the show is recorded in various indoor locations (mainly farm buildings or leisure centres and sometimes TV studios) throughout Wales.
