It is actually THE first song he wrote for Chicago (and, arguably, his best). He's talked before about how he met resistance from the other songwriters in the band, not wanting him to take away from their piece of the pie. I believe it was James Pankow who eventually agreed to help Lee to finish off the song. On a side note, I believe that Pankow is pretty much responsible for all of the horn arrangements anyway, but a few of the horn elements on this song were recycled for "Old Days" on the next album.
It is actually THE first song he wrote for Chicago (and, arguably, his best). He's talked before about how he met resistance from the other songwriters in the band, not wanting him to take away from their piece of the pie. I believe it was James Pankow who eventually agreed to help Lee to finish off the song. On a side note, I believe that Pankow is pretty much responsible for all of the horn arrangements anyway, but a few of the horn elements on this song were recycled for "Old Days" on the next album.