It's not a dumb question...logically, one would think that you are in a good position to hear what is coming out of your bell.TubaJock91 wrote:I am sorry if this is a dumb question, but why do people always insist that recording yourself is useful?
But, if you'll try recording yourself in a larger room at around 50-100 feet away, you may find that what you thought the audience was hearing isn't exactly what you imagined. This technique is most helpful for students preparing for auditions when they find out exactly what the committee is hearing when they play. I remember thinking that I was playing extremely secco on a particular low passage in the Bozza Concertino until I listened to a recording from "out in the hall"...I had to drastically alter my articulation to compensate for the muddiness that was coming out. My ears at one foot away just weren't giving me a true picture of what would be heard in the audience.
Also, expectation often breeds interpretation. Sometimes we hear exactly what we expect to hear, and not what is exactly happening. Intonation may not be as good as you think (or, it may be better!) and the tone quality you hear from your tuba is often affected by the vibrations going on inside your head...there is much documented evidence about the effects on the aural canal by vibrations in the embouchure.
Try it and find out for yourself (hint: pay particular attention to clarity of articulation and tone quality)!

