I was leafing through my ITG journal and came across this article. It begins with a discussion which defines the differences between forte (brassy) and mezzo forte. The author goes on to discuss his adaptation of this idea, relating instead to the acoustics of the hall, the size of the group, the type of music, amplification, or whatever. Would those of you who are pros here and have seen the article care to elaborate from your perspective? How about from conductor to conductor for the orchestral players? Do you vary your dynamic output even from night to night based on what feels/sounds fresh and appropriate?