Ich Grolle Nicht" is a poem originally written by Heinrich Heine, and first set to music by German composer Robert Schumann. In 1899, American composer Charles Ives re-set the poem, putting his own twist on the magical sound created by Schumann.
The poem, as translated from the original German:
will not complain, even if my heart does break,
Forever lost, o love! I will . . . .