Derek Trucks could very well be the best guitarist of his generation, and his sixth studio disc is his band's most accessible blues-rock set to date. Trucks hones the R&B;, jazz and Middle Eastern influences of his previous outings into a tight groove on Already Free. It kicks off with a gritty, swamp-boogie take on Dylan's "Down in the Flood" and stomps through a cover of the Southern-soul classic "Sweet Inspiration." The originals pull their weight, from the dusty, field-recording vibe of the title track to "Get What You Deserve," a distorto-blues monster. And appropriate for an album recorded at home, Trucks' wife, Susan Tedeschi, delivers some Bonnie Raitt sass on the track "Back Where I Started."