The most unmelodic, atonal instrumental Chicago ever released, “Free Country” is not a piece I would ever play separately – but it works as part of the “Travel Suite.”

“Free” isn’t as well remembered as some of Chicago’s bigger classic hits of the era, but I have a great time every time I hear it.

With ‘Flight 602,” Chicago’s Robert Lamm describes the boredom of waiting to go onstage, but this engaging song is anything but boring.

Robert Lamm’s sophisticated deep cut recalls a period when Chicago was one of the preeminent jazz-rock ensembles – not just a rock band with horns.

The only downside on Chicago’s “Sing a Mean Tune Kid” is its abrupt ending. But I guess I shouldn’t be too greedy.

Chicago’s more political material, “It Better End Soon” included, happens to be some of my favorite from their extensive catalog.

With 1970’s “Fancy Colours,” Chicago proves once and for all how sophisticated rock music can be.

This is one Chicago deep cut I never get tired of – and the band seems to feel the same: “Wake Up Sunshine” remains an enduring concert chestnut, too.

Chicago will be excellent throughout the Terry Kath years, but rarely, if ever better than this deep cut. “Poem for the People” is the sound of a band that can do anything and do it well.

With ‘Someday,’ Chicago’s Robert Lamm made the first of many political statements – and he did so with an exclamation mark.