The Symphony No. 8 in E-flat major by Gustav Mahler is one of the largest-scale choral works in the classical concert repertoire. Wikipedia
Composer: Gustav Mahler
Composed: 1906
Key: E-flat major
Nickname: Symphony of a Thousand
Movements: 2
Performers: Munich Philharmonic
Text: Veni creator spiritus; Closing scene of Goethe's Faust