This 1970 double album reveals a band blessed with an acute musical intellect. Textured passages vacillate between gritty R&B, jazzy rock, and brassy folk, yet songs stick in your head as sing-along hooks (like the Beatle-esque “What Else Can I Say” and “Free”) or somber narratives (“Prelude to Aire”). The moody, road-weary band come together on the six-part “Travel Suite”: “I Just Want to be Free” blasts, “Free Country” saddens, and “Happy ’Cause I’m Going Home” is folky and hopeful. They funk up the brass on “Sing a Mean Tune Kid,” then rock a blue-collar existence on “Off to Work.”