Joseph Parry (PHH 18) composed DINBYCH and named it after the city of Dinbych in northern Wales. The tune first appeared in Llyfr Tonau Cynulleidfaol Cenedlaethol Cymru (The Welsh National Book of Congregational Tunes) which was edited by Parry and published in several parts from 1887 to 1892. DINBYCH appears in the Psalter Hymnal in an abridged form, as found in other English hymnals. This anthem-like tune features a well-designed mix of small and larger intervals and short and longer phrases and is supported by a colorful harmony. Part singing and optional antiphonal performance are appropriate.
--Psalter Hymnal Handbook