To infinity and beyond...if I could dress this exercise up in a spacesuit I would, it is definitely the hero in my warm up! By bringing the tongue forward and allowing the larynx to rise freely this little bad boy can give you extra notes at the top of your range that you never knew you had.
This is perfect for you if:
You want to warm up your voice across your whole range
You have a breathy voice and want more vocal chord closure
Your voice is tired and needs some extra attention