He laid the template for breezy, loose-limbed West Coast folk rock in the '70s, but Jackson Browne's range extends to politicized repertoire with great urgency and intensity. Muscular bass and sprawling riffs propel the critique of “For America”; synths and cynicism provide a wiry throughline for the baleful outlook of “World In Motion”; soulful organ buoys the sweetly rueful “Some Bridges.”