The tenor saxophonist's catalogue shows a restless mind at work, as he doggedly pursues one original idea after another. After the fluid hard bop of tracks like 1956's “B. Swift”, Rollins took a multi-year hiatus and then returned with the moody twists and turns of songs like “John S”. In the ‘70s, he engaged with soul and rock textures on riotous performances of tunes like “Don't Stop the Carnival”.