A lot from column A and a little from column B. Everything about the story is true. I just thought it'd be funny to tell it like the lyrics.
Chicago had some good tunes, and I've always been a fan of a good horn section. Like the Marcus King Band.
I recently caught this REO/Chicago concert from 2014 and was pleasantly surprised by how tight these guys still are. Sure, they're squeezing every last bit they can out of their success's, but they seem to still enjoy it.
https://www.youtube.com/watch?v=fN4JgE8eEIY
There's also a condensed version with the two bands playing each others hit's for the encore ensemble:
https://www.youtube.com/watch?v=mqOVE4DF-iE