DEJLIG ER DEN HIMMEL BLAA is an anonymous Danish tune said to be the work of an old man unversed in music composition (around 1840). The tune was first published in Andreas Berggren's Melodier til den af Roeskildes Praesteconvent udgivne Psalmebog (1853).

A charming tune, DEJLIG ER DEN HIMMEL BLAA is built with several repetitions and sequences. It has a fine "rising star" figure in the first phrase and provides its own ritardando in the rhythm of the final phrase. Sing in harmony or in unison. To lighten the texture of this dance-like tune (especially on st. 3), play in three voices (omitting the tenor) on a light, bright organ registration.

--Psalter Hymnal Handbook