Requiem (Berlioz) - Instrumentation

Instrumentation

The Requiem is scored for a very large orchestra, four offstage brass bands, and chorus placed throughout the hall:

Woodwinds
4 Flutes
2 Oboes
2 Cors anglais
4 Clarinets in B-flat
8 Bassoons
Brass
12 Horns (4 parts + 2 extra in Mvt 2)
4 Cornets in B-flat
4 Tubas
Percussion
16 Timpani (10 players)
2 Bass Drums
10 pairs of Cymbals
4 Tam-tams
4 Brass Choirs
Choir 1 to the North
4 Cornets
4 Trombones
2 Tubas
Choir 2 to the East
4 Trumpets
4 Trombones
Choir 3 to the West
4 Trumpets
4 Trombones
Choir 4 to the South
4 Trumpets
4 Trombones
4 Ophicleides (usually substituted by Tubas)
Voices
Chorus:
80 Sopranos and Altos (exact ratio not specified)
60 Tenors
70 Basses
Tenor solo
Strings
25 Violin I
25 Violin II
20 Violas
20 Violoncellos
18 Double Basses

In relation to the number of singers and strings, Berlioz indicates in the score that, "The number indicated is only relative. If space permits, the chorus may be doubled or tripled, and the orchestra be proportionally increased. But in the event of an exceptionally large chorus, say 700 to 800 voices, the entire chorus should only be used for the Dies Irae, the Tuba Mirum, and the Lacrymosa, the rest of the movements being restricted to 400 voices."

The work premiered with over four hundred performers.

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