This was something that came up in rehearsal last week and I am curious to find out if anyone else suffers from this porblem?! I have played cornet/flug since I was 14 and have always have a problem with middle A. I am always flat! Every teacher, totor and conductor I have had has picked up on my A's! whenever I have to play an A that is a crotchet or longer I have to mentally remember ot lip it up everytime I play one yet every other note is nion perfectly in tune. It's not the instrument as I have a few cornets and have the same problem with all of them. I've tried 3rd valving it at the suggestion of our conductor but this still doesn't help. Can any one explain this strange problem I have with middle A or maybe there is someone out there that suffers from the same condition of middle 'A' syndrome?!