ORIGINALLY PUBLISHED IN THE GEORGIA STRAIGHT, JAN. 4, 2007 By Steve Newton The world is full of wicked blues guitarists, but few are as downright tasty as 26-year-old Sean Costello. He started playing at the age of nine, shortly after moving from Philadelphia to Atlanta, absorbing the skills of the sharpest pickers around. “Hubert Sumlin … Continue reading Sean Costello played lead guitar on Susan Tedeschi’s debut album while still in high school