Eugene Foveau compiled this wonderful collection of advanced orchestral excerpts under the title “Traits Difficiles: Advanced orchestral excerpts from symphonic and operatic works for the cornet.” These are beautifully typewritten, much easier to read than the usual parts you might find on your stand, and give you only what you need, the required excerpt with no distractions. Cornet version is available here (LINK), and the trumpet edition is available here (LINK). Here is the list of what is included:

Stravinsky: Petrouchka
Saint-Saens: Henry VIII
Berlioz: Symphony Descriptive
Berlioz: Le Carnival Romain
Villa-Lobos: Ballet
Lalo: Namouna Ballet
Dukas: Sorcerers Apprentice
D'Indy: Le camp de wallenstein
D'Indy: Symphonie Sur Un Theme Montagnard
Bizet: Carmen
Laparra: La Habanera
Laparra: L'illustre Fregona
Hahn: La Fete Chez Therese
Maillart: Les Dragons De Villars
Berliz: Damnation of Faust
Poulenc: Les Animaux Modeles
Gounod: Faust
Berlioz: Harold in Italy
Verdi: Othello
Charpentier: Impressions D'Italie
Massenet: Manon
Thomas: Mignon
Saint-Saens: Samson and Dalila
Meyerbeer: Marche Aux Flambeaux