I Vow to Thee, My Country
In 1921 Gustav Holst changed the music from a section of the song Jupiter from his suite The Planets to create a setting for the poem. The music was made a bit longer so that it would fit the last two lines of the first verse; the result is usually called the Thaxted (named after the village where Holst lived for many years). This was first performed in 1925 and became very common at Armistice memorial ceremonies.