We all know that Aggy has a phenomenal voice, however she is constantly being criticized for over singing and growling on her latest works. X-Tina has probably caught wind of the criticism and has now hired
famed vocal coach, Seth Riggs. Some of Seth's students include Michael Jackson and Josh Groban.
This is a good step for Christina. It shows she's willing to work on her voice to show restraint and not over sing and to hit those notes when we need to hear those notes.
