Euphonium,Piano - Level 2 - Digital Download SKU: A0.593140 Composed by Sabine Baring-Gould. Arranged by David McKeown. Christian,Gospel,Praise & Worship,Sacred,Spiritual. Score and part. 3 pages. David McKeown #6416469. Published by David McKeown (A0.593140). Onward Christian Soldiers is a beautiful gospel song arranged here for Solo Euphonium and Piano.Onward Christian Soldiers was written by Sabine Baring-Gould in 1865 and set to music by Arthur Sullivan in 1871. Churchill later chose the hymn to be sung at a wartime service when he met Roosevelt in 1941. In more recent times there have been attempts, some successful, some not, to alter the military flavor of the lyrics.