The first 30 excerpts below are listed in order of frequency that they appeared on orchestral audition lists collected between 1971 and 1980. The rest are a recommended list to build from. The list does not differentiate between first and second trombone passages as any aspiring trombonist should be prepared take auditions for both. The excerpts are listed in order of importance as follow: 

Composer;        Title
1.  Mozart;   Tuba Mirum, from the Requiem
2.  Ravel;   Bolero
3.  Strauss;   Till Eulenspiegel
4.  Wagner;   The Ride of the Valkyries
5.  Wagner;   Tannhauser Overture
6.  Berlioz;   Hungarian March
7.  Mahler;   Symphony #3
8.  Rimsky-Korsakov;  Russian Easter Overture
9.  Schumann;   Symphony #3, "Rhenish"
10.  Brahms;   Symphony #1
11.  Rossini;   William Tell Overture
12.  Saint Saens;   Symphony #3 "Organ"
13.  Rimsky-Korsakov;  Scheherazade
14.  Strauss;   Also Sprach Zarathustra
15.  Stravinksy;   Firebird
16.  Wagner;   Prelude to Act III of Lohengrin
17.  Hindemith;   Symphonic Metamorphosis
18.  Brahms;   Symphony #2
19.  Brahms;   Symphony #4
20.  Hindemith;   Sonata for Trombone
21.  Beethoven;   Symphony #5
22.  Strauss;   Ein Heldenleben
23.  Berlioz;   Symphony Fantastique
24.  Tchaikovsky;   Symphony #6
25.  Bartok;   Concerto for Orchestra
26.  Bartok;   Miraculous Mandarin
27.  Hindemith;   Matis Der Maler
28.  Barber;   Medea
29.  Beethoven;   Missa Solemnis
30.  Beethoven;   Symphony #9
 Other Important Excerpts
31.  Berg;   Wozzeck
32.  Berg;   Three Pieces
33.  Brahms;   Tragic Overture
34.  Borodin;   Prince Igor
35.  Britten;   Young Persons Guide
36.  Bruckner;   Symphonies #4,#7,#8
37.  Dvorak;   Symphony #9, "New World"
38.  Hindemith;   Concert Music for Strings and Brass
39.  Janacek;   Sinfonietta
40.  Milhaud;   The Creation of the World
41.  Mahler;   Symphonies #1,#5,#9
42.  Mussorgsky-Ravel;  Pictures at an Exhibition
43.  Mozart;   Magic Flute
44.  Prokofiev;   Romeo and Juliet
45.  Respighi;   The Pines of Rome
46.  Revueltas;   Sensemaya
47.  Ravel;   Daphnis and Chloe
48.  Ravel;   La Valse
49.  Rossini;   La Gazza Ladra
50.  Scriabin;   Symphony #3
51.  Shostakovich;   Symphony #1
52.  Schumann;   Symphony #4
53.  Strauss;   Don Juan
54.  Strauss;   Death & Transfiguration
55.  Strauss;   Sinfonia Domestica
56.  Schubert;   Symphony #9
57.  Stravinsky;   Rite of Spring
58.  Stravinsky;   Petrouchka
59.  Stravinsky;   Histoire du Soldat
60.  Stravinsky;   Pulcinella
61.  Tchaikovsky;   Symphonies #4,#5
62.  Verdi;   Requiem
63.  Verdi;   Otello
64.  Wagner;   Flying Dutchman

    The additional list for tenor trombone is based on one put together by the American Symphony Orchestra League in their publication, "Facing The Maestro: A Musician's Guide to Orchestral Audition Repertoire." It was compiled and edited by Katherine Akos, Marshall Burlingame and Jack Wellbaum. In addition to lists of audition repertoire for each instrument culled from audition lists for vacancies in over 20 orchestras, it includes a list of publishers for each work and their addresses. To obtain the complete book, write: The American Symphony Orchestra League, 633 East Street NW, Washington, DC 20004 (phone 202/628-0099)

    In Order of Frequency Asked
     Ravel - Bolero
     Brahms - Symphony 1
     Mozart - Requiem (Tuba Mirum)
     R. Strauss - Till Eulenspiegel
     Berlioz - Hungarian March (Damnation of Faust)
     Rossini - William Tell Overture
     Wagner - Ride of Die Walkure
     Wagner - Tannhauser Overture
     Brahms - Symphony 4
     Rimsky-Korsakov - Scheherazade
     R. Schumann - Symphony 3 ("Rhenish")
     Hindemith - Symphonic Metamophosis
     Mahler - Symphony 3
     Rimsky-Korsakov - Russian Easter Overture
     R. Strauss - Also Sprach Zarathustra
     Stravinsky - The Firebird
     Wagner - Prelude to Act III of Lohengrin
     Berlioz - Symphonie Fantastique
     Rossini - La Gazza Ladra Overture
     St. Saens - Symphony 3 ("Organ")
     Bartok - Concerto for Orchestra
     Berg - Three Pieces
     Borodin - Polovetsian Dances
     Brahms - Symphony 2
     Hindemith - Mathis der Maler
     Stravinsky - Petroushka
     Bartok - MIraculous Mandarin
     Brahms - Tragic Overture