Changes to Orchestra tuning.

@bolong 

no, this is a real issue, that effects music at it (re)creation.This Loudness Wars is a mixing issue 

I was being facetious. However, increasing the string sections "brilliance" with the higher tuning might be considered an increase in "loudness."

@frogman. Very interesting re the oboe for tuning. I've often had season's subscriptions to Symphonies since the 70's.  Hundreds of concerts. Just goes to show my inattention :)  I've never paid attention until I've heard the 1st violin fire up. I'm always reading up or discussing the program. Perhaps the tones of the notes? Interesting to learn after all these years. Next visit I'll be paying attention! I hope. Thanks for your gentle information  :)   I guess the Oboe players will be working on their reeds :)  

As you know, it is standard practice for the concert master (1st violin) to enter the stage shortly before the conductor does.  He then signals to the oboe to give the “A” .  He usually remains standing while the orchestra tunes to that “A”.  Usually, the oboe then gives another A (same tuning, of course) which in theory is supposed to be just for the strings. That’s probably why you thought it was he who gave the A.  Enjoy your next concert and thanks for supporting live music!