Bydd yr Urdd a'r genedl gyfan yn ymgeisio am ddau deitl Guinness World RecordsTM drwy gyd-ganu ac uwchlwytho fideos o'r gân eiconig, Hei Mistar Urdd, i Twitter a Facebook. Dyma'r fersiwn sydd angen ei chanu ar y 25ain o Ionawr 2022.
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