Ysgolion Tryfan a Bro Myrddin yn ceisio cyrraedd yr wyth olaf. Ysgol Tryfan and Ysgol Bro Myrddin compete to reach the quarter-finals of Radio Cymru's pop quiz.
Discover 11,128,835 listings and 277,159 playable programmes from the BBC
Ysgolion Tryfan a Bro Myrddin yn ceisio cyrraedd yr wyth olaf. Ysgol Tryfan and Ysgol Bro Myrddin compete to reach the quarter-finals of Radio Cymru's pop quiz.
Mae Radio Cymru wedi bod yn darlledu rhaglenni ers 1977. Radio Cymru has been broadcasting to the nation since 1977.
