Loud Mouth is the vanity plate of Idina Menzel.
Visuals: A white speech bubble with rounded but fairly unsmooth edges contains the cursive, diagonally angled text "Loud Mouth" in a stacked format.
Technique: A still, digital graphic.
Audio: The closing theme of the program.
Availability: The logo is seen on Idina Menzel: Which Way to the Stage.