The trombone with its ponderous tone rarely takes part in such combinations. Sustained notes in double octaves are usually apportioned thus:
The imperfect balance arising from the duplication of the middle note is compensated for by the mixture of timbres, which lends some unity to the chord.
Examples of harmony in the brass:
a) Independent chords:
Snegourotchka 74—3 Trombones, 2 Horns.
"140—3 Trombones, 2 Horns. Chords in different groups alternately (cf. [Ex. 244]).
"171—Full brass; further on 3 Trombones (cf. [Ex. 97]).