Now then this isn't from an old pair of socks down the bell or an old cheese buttie that's got lost. I have a band BBb Tuba; when I got it originally, it needed a darn good clean up. After replacing all the valve guides/springs/dampeners etc and washing it through in the bath with soap (much to Mrs Matthew's disgust!), it still has a musty smell about it a few months later. How can I get rid of this? It's not the case as I've put it in a gig bag I have. Another rinse through? Any suggestions what to use? Thanks all.