I n a 2007 study conducted at Northwestern University, members of the Auditory Neuroscience Laboratory concluded that playing music is directly related to public speaking capabilities.     As it turns out, Sonic Corporation, headquartered in Oklahoma City and Oklahoma City University have joined forces to offer Tiffany Clay a fall scholarship worth 100,000. Back in April, I came across the heartbreaking front page New York Times story of Newark, Ohio high school student Tiffany Clay. Tiffany is the recently graduated and highly gifted first violinist