Details: SKY BLUE SKY is as eloquently straightforward as Wilco's last studio recording, the Grammy-winning a GHOST IS BORN, was daringly experimental. Tweedy's lyrics deal forthrightly with romantic separation and reconciliation, their bittersweet quality giving way, as the album progresses, to a more uplifting, redemptive mood. Tweedy quite literally banishes the darkness on the penultimate track, the inspiring, gospel-tinged "What Light" - the album's first single - and concludes with a deeply affecting, till-death-do-us-part lullaby, "On and on and On".