Dathlu deugain mlynedd darllediad cynta'r Opera Roc Gymraeg 'Etifeddiaeth Drwy'r Mwg'. The Welsh rock opera Etifeddiaeth Drwy'r Mwg celebrates 40 years since its first transmission.
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Dathlu deugain mlynedd darllediad cynta'r Opera Roc Gymraeg 'Etifeddiaeth Drwy'r Mwg'. The Welsh rock opera Etifeddiaeth Drwy'r Mwg celebrates 40 years since its first transmission.
Mae Radio Cymru wedi bod yn darlledu rhaglenni ers 1977. Radio Cymru has been broadcasting to the nation since 1977.
