Symphony No. 8 (Mahler)
Symphony No. 8 is very unusual because he does not have the usual three or four movements with traditional forms such as sonata form.  The whole symphony is in two parts.  Part I is based on the Latin text of a ninth-century Christian hymn for Pentecost, Veni creator spiritus ("Come, Creator Spirit").  Part II is in German.  The words come from the closing scene of Goethe's Faust.