Closing ‘Night and Day: Big Band’ triumphantly, “Take the ‘A’ Train” makes me wish Chicago had included more big-band covers on their earlier albums.

Usually, “Sing, Sing, Sing” is played in a show-off arrangement to spotlight how fast a group can play together, but Chicago takes a different approach.

“If It Were You” is a flawless song, yet Chicago left it as an deep cut on 1991’s ‘Twenty 1,’ releasing dull, lifeless ballads as singles instead.

Artificial drum beats are all that prevent “I Stand Up” from fitting right into 1972’s ‘Chicago V’ or 1974’s ‘Chicago VII.’

As other members of Chicago stepped back from writing songs, or stepped out on their own for solo careers, Bill Champlin stepped up.

Did erstwhile Chicago singer Peter Cetera once have a secret ambition to be a movie star? He wrote and recorded two songs on this theme in the early ’80s, including this one.

What if Chicago didn’t hire a singing replacement after Peter Cetera left? “Only You” provides a glimpse.

“What Can I Say” builds on the story that Chicago started with their chart-topping 1976 smash “If You Leave Me Now.”

Almost no information exists about “Live It Up,” a bonus track on the Rhino re-release of 1980’s ‘Chicago XIV.’

Robert Lamm’s “I’d Rather Be Rich” had been sitting around in the vaults for several years before it made the ‘Chicago XIV’ album.