Willie Nelson has created so many classic albums during the last 40-plus years that it's almost preposterous to suggest that his latest is one of his best ever—but it is. Kenny Chesney recently told Billboard that in co-producing the legend, "I wanted to push him"; he succeeded in spades. While the album features plenty of what Nelson does best, particularly on the touching Kris Kristofferson/Danny Timms-penned title cut and the remorseful "Over You Again," he also connects on the curves that Chesney and co-producer Buddy Cannon threw at him, like Dave Matthews' "Gravedigger" and Bob Dylan's "Gotta Serve Somebody." "The Bob Song," an at-times psychedelic testament to independence (written by Big & Rich's Big Kenny Alphin), fits Nelson to a "T" and is another example of Chesney's guiding hand. —Ken Tucker