A single-CD retrospective of Willie Nelson’s career will span more than 40 years and six record labels. Although Nelson has released numerous greatest hits packages, the upcoming Songs compilation is the first to attempt to hit all of the high points of his career ranging from the original 1961 demo for “Crazy” to material from his recent albums, including The Great Divide and Stars & Guitars. The 20-song collection features several of his biggest hits, including “Blue Eyes Crying in the Rain,” and duets with Lee Ann Womack, B.B. King, Brian McKnight, Merle Haggard and Waylon Jennings. Songs is set for Feb. 15 release.