These Kentucky boys took a giant leap forward on their fourth album — giant enough to take them from a jammy Americana band to awe-inspiring purveyors of interstellar art rock. Jim James' songs were shorter and more focused than ever before, from the pummeling "Gideon" to the playful "Wordless Chorus," where James boasted appropriately, "We are the innovators/They are the imitators." My Morning Jacket infused Z with both Eno-esque keyboards and sculpted guitars, but also Skynyrd-style riffs and bar-band grooves. The result brought Radiohead down South and rocked with supersize soul.
• Rolling Stone's Original 2005 Review