The text of this majestic setting of the Sanctus, which is the final movement of the set, combines Isaiah's vision and call in Isaiah 6 with the triumphant entry of Jesus into Jerusalem as recorded in Matthew 21:9, Mark 11:9 and John 12:13. Without a doubt this is one of Mendelssohn's finest works for unaccompanied chorus. Difficulty Level: Medium Adult. Duration - 00:01:17.