Listen to O Na Byddai'n Haf O Hyd online. O Na Byddai'n Haf O Hyd is a Welsh language song and is sung by Tri Tenor. O Na Byddai'n Haf O Hyd, from the album Tri Tenor, was released in the year 2021. The duration of the song is 3:04. Download Welsh songs online from JioSaavn.