| Trombone Trombone | >[ | 8 ([Ex. 95]). |
Melody in different groups of instruments combined together.
A. Combination of wind and brass in unison.
The combination of a wood-wind and brass instrument produces a complex resonance in which the tone of the brass predominates. This resonance is naturally more powerful than that of each instrument taken separately, but slightly sweeter than the brass instrument alone. The tone of the wood-wind blends with that of the brass, softens and rarefies it, as in the process of combining two wood-wind instruments of different colour. Instances of such doubling are fairly numerous, especially in forte passages. The trumpet is the instrument most frequently doubled: Trumpet + Cl., Trumpet + Ob., Trumpet + Fl., as well as Trumpet + Cl. + Ob. + Fl.; the horn, less often: Horn + Cl., Horn + Fag. Trombones and Tuba may also be doubled: Trombone + Fag., Tuba + Fag. Combining the Eng. horn, bass clarinet and double bassoon with the brass, in corresponding registers, presents the same characteristics.
Examples:
Legend of Kitesh 56—Trombone + Eng. horn.
* Mlada, Act III, before 34—3 Trombones + Bass cl.
As a rule, the addition of a wind to a brass instrument yields a finer legato effect than when the latter instrument plays alone.
B. Combination of wind and brass in octaves.
Doubling the horns in octaves by clarinets, oboes or flutes often replaces the combination