Ifan Davies a Siân Adler yn gofyn cwestiynau am... cerddoriaeth bop! Plasmawr a Garth Olwg sy’n cystadlu! Plasmawr and Garth Olwg compete in the annual pop quiz for schools! Show more
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Ifan Davies a Siân Adler yn gofyn cwestiynau am... cerddoriaeth bop! Plasmawr a Garth Olwg sy’n cystadlu! Plasmawr and Garth Olwg compete in the annual pop quiz for schools! Show more