- The pitch that non-transposing instruments sound.
- The tuning pitch of an ensemble. Instruments in a band or orchestra tune to the concert pitch which is typically the universal standard A' = 440 Hz. While concert pitch is non-transposing, a variety of wind instruments, such as the trumpet, clarinet, and horn are transposing instruments, indicating that the pitch A', as relating to that instrument, will not be sounded as an A' concert pitch but rather a pitch called an A' on that instrument. Thus, when a B-flat trumpet plays an A' (first and second valves), the instrument is actually sounding a G' concert pitch.
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