I'll limit myself to one per author and 20 of them which I happen to remember as I write this post.
1. Perotin - Viderunt Omnes
2. Machaut - Messe de Nostre Dame
3. Ciconia - Le ray au soleyl
4. Ockeghem - Missa prolationum
5. Bach - Wachet auf, ruft uns die Stimme BWV 140
6. Mozart - Great Mass in C minor
7. Wagner - Die Meistersinger von Nürnberg
8. Brahms - Nänie
9. Mahler - Symphony No. 10
10. Schoenberg - Pierrot Lunaire
10. Berg - Three Pieces for Orchestra
11. Webern - Symphony
12. Schmidt - Symphony no. 4
13. Strauss - Metamorphosen
14. Bartok - Music for Strings, Percussion and Celesta
15. Nono - Variazioni canoniche
16. Stockhausen - Kontra-Punkte
17. Boulez - Le Marteau sans maître
18. Ligeti - Requiem
19. Berio - Bewegung
20. Benjamin - Three inventions