This two-CD, 25-song set, recorded in Louisville on two nights in the spring of 2002, finds bluegrass's most celebrated crossover band at the top of its game. Krauss's warm, feathery vocals, capable of conveying complex emotions in a single note, appear more full-bodied than in studio recordings, yet lose none of their sensual appeal or dramatic tension. She's perfect, for example, as the melancholy temptress on "Let Me Touch You for Awhile," coming across as both savior and seductress, while Jerry Douglas's Dobro echoes the searing strains of passion and pain. With banjoist-guitarist Ron Block, bassist Barry Bales, and guest drummer Larry Atamanuik anchoring the rhythm, the ensemble deftly blends bluegrass with jazz, rock, and folk, combining lightning speed (though rushing through "Forget About It") with sophisticated chops, tangible emotion, and thrilling vocal blends. The crowd, more spellbound with every note, doesn't even breathe on "Ghost in This House" and nearly tears the place down on Dan Tyminski's voice-of-George Clooney showcase, "I Am a Man of Constant Sorrow." But who could blame them? It's only one highlight on an album of uncommon artistry, a moving testament to how good live music can be in the hands of world-class players.