O HEILAND, REISS DIE HIMMEL AUF is a German chorale melody published anonymously in Rheinfelsisches Deutsches Catholisches Gesangbuch (1666 ed.). Psalter Hymnal Revision Committee member Dale Grotenhuis (PHH 4) prepared the harmonization in 1985.
The tune is in Dorian mode and exhibits two main rhythmic patterns within its four lines. Try singing stanzas 1, 3, and 5 in unison. Have stanzas 2 and 4 sung in harmony by antiphonal groups or by the choir. Use strong rhythmic organ or piano accompaniment. Sing with one pulse per bar.
--Psalter Hymnal Handbook, 1988