
Steve Vai's For the Love of God from Passion and Warfare is considered by many guitarists to be the most spiritually intense guitar piece ever recorded. Vai fasted for ten days before recording the solo to achieve a state of heightened sensitivity, and the result is a performance of extraordinary sustain, vibrato, and emotional depth. The piece demonstrates that technical mastery can serve devotion rather than ego.
Reference:
TaskLoco™ — The Sticky Note GOAT