The National Association of Teachers of Singing (NATS) is a non-profit association of teachers of singing that promotes the highest standards in the teaching of singing . Check out local NATS Puget Sound and NATS Tahoma chapters as well.
The Voice Foundation is dedicated to advancing understanding of the voice through interdisciplinary scientific research & education, and also has a local Seattle/Northwest chapter.
Ingo Titze demonstrates the Straw Flow Phonation exercies to release and relax the vocal folds. He suggests doing this several times a day for just a few minutes.
Tyley not only sings in the MRI, but he demonstrates how the same note looks for opera, rock, light mix, and forward Broadway style.
Another MRI video of a soprano singing.
Credit: USC Signal Analysis and Interpretation Laboratory
This video shows how your mouth, tongue, soft palate, and more move during speech.
Video: Max Planck Institute for Biophysical Chemistry, Göttingen