 I hope you like Wilco, because today on World Cafe, it's a supersized hour featuring Jeff Tweedy and the band. We'll dive into Tweedy's new book, World Within a Song, a collection of essays on songs from across the spectrum, including the first song that turned him on to the power of music. That riff sounds so good on a guitar so quickly for most people that I think it's a real gateway drug to the magic of playing an instrument.