Take Action #21: Trills
Roll your tongue on the roof of your mouth (in a “Spanish ‘R’ ” sound) while going up and down the scale Doing trills combines warming up your vocal cords with waking up your tongue. Since your vocal apparatus is like a machine, you want all of its parts warmed up, well-oiled and working together to create your best, strongest, most versatile voice.
Great articulation, and rapid tongue movement is what a ventriloquist uses when throwing their voice.