During tuning, what does the oboe do and how do players respond?

• A. The oboe tunes with C and others ignore, since auto-tuning is used.
• B. The oboe plays B and all others calibrate by ear.
• C. The oboe is not used; tuning is based on a pre-recorded reference pitch.
• D. The oboe plays A; players listen and tune to that pitch; Strings adjust tension and wind players adjust embouchure/air, under the conductor's guidance.

Answer: (D)