Yes, I’ve heard you yelling “Free Bird!” at your Spotify player, smartass; it’s right here, after a triple dose of Zep, two deep rips of Jimi Hendrix, and two searing Duane Allman solos. (Due to my desire to avoid 20+ minute songs, though, it is the studio version of “Whipping Post,” not the Fillmore East one.) ‘Guitar hero’ is a perfectly apt term for these musicians playing the apotheosis of blues rock indulgence - when you’re listening to them, you feel unstoppable, unbreakable, faster than a speeding bullet.