|The Bridge Troll|
He hates a smooth vocal range, and loves vocal strain and cracking. There are a range of powerful tools you can use to defeat him, using a single main principle:
"By consciously maintaining an identifiable and repeatable feeling of relaxed openness in the throat, he won't be able to grip on to the larynx, and you will sail easily between registers. Once you really get this feeling to be permanent in muscle memory, he won't even see you go by, and will turn to dust and disappear."
While the larynx is jumping, it is quite impossible to properly control all the elements that go to make up the singing voice. When the Troll is gone, you will be amazed at how you begin to see new and subtle controls in the voice, so you can get your sound just the way you want it.
So your first singing lessons should be all about how to produce the various vowels and consonants in such a way as to maintain that relaxation in the throat.