While most widely recognized for his stature as a rock guitar player, Vai is also a musical composer fluent in the composition and arranging of orchestral music. In May 2004, Vai premiered "The Aching Hunger", a project commissioned by the Netherlands Programme Service and performed with the Netherlands' Metropole Orchestra. "The Aching Hunger" performances consisted of two parts: the first showcasing Vai's original contemporary orchestral compositions, and the second consisting of Vai (on guitar) playing newly arranged material from his catalog with the orchestra. This project yielded both the "Visual Sound Theories" DVD and the "Sound Theories Vol. I & II" album, which were recorded in 2005 during multiple "Aching Hunger" performances and released in June 2007. While "The Aching Hunger" and its following releases started Vai's public career as an orchestral composer, Vai had been composing since he began a music theory class (taught by Bill Westcott) in high school. In speaking of Westcott, Vai says "He taught me how to write, compose and appreciate music. There was no greater musical influence in my life."