Listen to Y Delyn Aur online. Y Delyn Aur is a Welsh language song and is sung by D.J. Rees, Treorchy Male Voice Choir and John Haydn Davies. Y Delyn Aur, from the album Welsh Male Voice Choir Tradition: Treorchy Male Voice Choir, was released in the year 2017. The duration of the song is 4:56. Download Welsh songs online from JioSaavn.