This is the official list of pieces to prepare for Messiah.
Giant Rehearsal: March 30 after regular rehearsal.
Montpelier Rehearsal: April 13 afternoon/evening
Montpelier Performance: April 14
Overnight host families available.
1. Overture2. Comfort Ye3. Every Valley4. And the Glory of the Lord9. O Thou that Tellest12. For Unto Us a Child is Born13. Pastoral Symphony18. Rejoice!19. Then Shall the Eyes of the Blind be Opened20. He Shall Feed His Flock22. Behold the Lamb of God33. Lift up Your Heads37. The Lord Gave the Word44. Hallelujah!45. I Know that My Redeemer Liveth46. Since By Man Came Death47. Behold I Tell You a Mystery48. The Trumpet Shall Sound53. Worthy is the Lamb
Tips for practice: 3 and 4 are in the Key of E (4 sharps). Number 18 is just generally hard, and so is number 53. :)