The valves of a trumpet and the slide of a trombone are for the purpose of:
A)playing short (staccato)notes
B)tuning the instruments
C)changing the harmonic content
D)changing the length of the air column
E)producing gradations in loudness

Question

Quizplus · Accepted Answer

The valves of a trumpet and the slide of a trombone are used to change the length of the air column, which alters the pitch of the instrument.

The Valves of a Trumpet and the Slide of a Trombone