The following are videos on the forward Nasal Mask singing technique.This type of singing is prevalent today. It is a result of trying to force the sound into the mask area of the face.
I classify mask singing in the same category as nasal singing. Even though, there are some physical and aural differences. Nasal singing will always be in the "mask". Singing in the mask is not always nasal. As stated on a previous video on nasality.
"Nasal" type singing is constrictive. Nasal mask singing destabilizes the larynx and affects the vocal quality and production. The by product of this, is dominated by what is called, constrictive noise. Outside normal resonance. Noise, is a metallic, buzzy, scratchy sound. The sound that accompanies this, is thin, bright, and strident. This sound is sometimes whiny. The following talented singers demonstrate this fault. Because of the higher pitches of the voice. The female voice best demonstrates the affects of Nasal Mask singing.