You will find the list of orchestra excerpts below. (click link for pdf)

Violin

Violin concertmaster / (co-)principal (and Violin excerpts below)
Brahms - Symphony No. 1 - II

Violin
Brahms - Symphony No. 4
Mendelssohn - A Midsummer Night's Dream
Mozart - Symphony No. 39
Strauss - Don Juan

Viola

Viola (co-)principal
Stravinsky - L'oiseau de Feu
Strauss - Don Quixote

Viola
Strauss - Don Juan
Shostakovich - Symphony No. 5 - I
Mendelssohn - A Midsummer Night's Dream
Bartók - Concerto for Orchestra

Cello

Cello (co-)principal
Brahms - Piano Concerto No. 2

Cello
Strauss - Ein Heldenleben
Beethoven - Symphony No. 5
Brahms - Symphony No. 2 - II
Mendelssohn - A Midsummer Night's Dream

Double bass

Double Bass (co-)principal
Mahler - Symphony No. 1 - III
Stravinsky - Pulcinella - VII

Double Bass
Beethoven - Symphony No. 5 - III
Beethoven - Symphony No. 9 - IV
Mozart - Symphony No. 40 - I
Strauss - Ein Heldenleben

Flute

Flute
Dvořák - Symphony No. 8 - IV
Prokofiev - Peter and the Wolf
Rachmaninov - Symphonic Dances - I
Shostakovich - Symphony No. 6 - I
Tchaikovsky - Piano Concert No. 1 – I, II, III

Flute: Piccolo
Bizet - L'Arlésienne Suite
Dukas - The Sorcerer's Apprentice
Ravel - Bolero
Ravel - Piano Concerto - I

Oboe

Oboe
Strauss - Don Juan
Rossini - Scala di Seta (The silken ladder)
Ravel - Le Tombeau de Couperin
Beethoven - Symphony No. 3
J.S. Bach - Ich habe genug BWV 82 (until the fermata; up to and including measure 34)

Cor Anglais
Dvořák - Symphony No. 9 - II
Rossini - Guillaume Tell

Clarinet

Clarinet
Beethoven - Symphony No. 6
Berlioz - Benvenuto Cellini
Berlioz - Symphonie Fantastique
Ravel - Daphnis et Chloe
Verdi - La Forza del Destino

E-flat Clarinet
Berlioz - Symphonie Fantastique
Ravel - Bolero

Bass Clarinet
Shostakovich - Violin Concerto
Mahler - Symphony No. 6

Bassoon

Bassoon
Brahms - Violin Concerto - II
Mozart - Le Nozze di Figaro
Shostakovich - Symphony No. 9 - IV - V
Stravinsky - Le Sacre du Printemps

Double Bassoon
Mahler - Symphony No. 4 - I - II
Ravel - Ma Mère l'Oye

Alto saxophone

Bernstein - Symphonic Dances from the West Side Story (only 15-40, 141-167, 400-437, 581-589 and 632-669)
Gershwin - I Got Rhythm (only the fragments between brackets: the third measure after rehearsal mark 1 to 2 / the sixteenth measure after 6 to 7 / the seventh measure after 11 to the second measure of 19)
Shostakovich - Jazz Suite No. 2
Rachmaninoff - Symphonic Dances

French horn

French Horn High
Strauss - Ein Heldenleben
Ravel - Bolero
Mahler - Symphony No. 9
Brahms - Symphony No. 2 - II

French Horn Low
Beethoven - Symphony No. 9 - III
Shostakovich - Symphony No. 5 - I
Strauss - Don Quixote

Trumpet

Bartók - Concerto for Orchestra
Donizetti - Don Pasquale
Mahler - Symphony No. 5 - I
Stravinsky - Petrushka

Trombone

Trombone
Rossini - Guillaume Tell
Mozart - Requiem - Tuba mirum
Ravel - Bolero
Wagner - Die Walküre

Bass trombone
Rossini - Guillaume Tell Overture
Wagner - Die Walküre
Stravinsky - Petrushka
Schumann - Symphony No. 3
Haydn - Die Schöpfung
Beethoven - Symphony No. 9

Tuba

F tuba
Verdi - Requiem
Wagner - Die Meistersinger von Nürnberg
Strauss - Till Eulenspiegel

Contrabass tuba
Wagner - Das Rheingold (Wurm solo only)
Prokofiev - Symphony No. 5
Hindemith - Sinfonische Metamorphosen

Euphonium

Mussorgsky - Bydlo & Mahler - Symphony No. 7
Strauss - Ein Heldenleben

Harp

Tchaikovsky - Swan Lake
Stravinsky - Le Baiser de la Fee
Berlioz - Symphonie Fantastique
Verdi - La Forza del Destino

Piano

Stravinsky - Petrushka - Danse Russe
Tschaikovsky - Nutcracker Suite - No. 1
Stravinsky - Symphony in 3 Movements
Bartók - Music for Strings Percussion and Celesta

Timpani / Percussion

Timpani
Bartók - Concerto for Orchestra
Strauss - Burlesque
Beethoven - Symphony No. 9
Beethoven - Symphony No. 1 - III
Mozart - Die Zauberflöte Overture

Bass drum
Mahler - Symphony No. 3

Snare drum
Delécluse - Test-Claire

Xylophone
Stravinsky - L'Oiseau de Feu
Gershwin - Porgy and Bess
Messiaen - Les Oiseaux Exotiques

Bells
Dukas - L'Apprenti Sorcier
Debussy - La Mer

Cymbals
Tchaikovsky - Romeo and Juliet

List source: National Youth Orchestra of The Netherlands