I know this has been discussed before, but I think that was in a slightly different context... In my lesson today my teacher said that I was a bit of a "mouse" when it comes to playing loudly! He asked me if I ever practice with a very big volume, and the answer came back : "Well... no!" I think I've got a bit of an issue with big breathing, and consequently big loud playing. He's got me doing the diminished / dominant 7ths from Arban at a big volume, and I was just wondering if you had any tips? I've just done 30 mins of it, at a very large volume, and now my stomach aches! My lips feel fine strangely enough, but after about 30 mins all my support from down below seems to have given out. This is very strange for me, as it doesn't normally happen (but then I don't normally practice playing very loudly). The other thing is I noticed the tone started to break up when I reached a certain volume, and even some double-buzzes started creeping in. That's also not something I normally have to deal with. I feel like someone's just punched me very hard in the stomach! Cheers, Jack.