bassoonic (bəˈsuːnɪk) adjective – like a bassoon
One of the exercises we did at the singing class I went to this morning was to imagine our voices were like different instruments and coming from different parts of the body. The instruments were the flute (a smallish, narrow voice), the clarinet (a medium, wider voice), and the bassoon (a full, wide voice). One of us coined the word bassoonic to describe this type of voice, which we all thought was a great word.
There are probably technical terms to describe the different ways of breathing and singing involved, but we find it helps to use these types of images.