I have the first 8 or 9 albums, and in all honesty I have to listen to them all again ... but there were/are a lot of very neat things, and far out things in all of those albums ... absolutely a great band, and some neat artistry in it all ... and check the Rick Beato discussion of Chicago in a couple of his shows ... beautifully done and the appreciation for the music, was excellent. 

It was one of the first times I had really heard someone appreciate CHICAGO for their music ... and I go way back to their very first album ... as they were the "brothers" in those days that we all got together and ... sometimes we had to put up with cops hitting our heads ... but in the end, the music is the greatest symbol of what life really means ... it was a scary time, but when you knew you had someone else with you ... things got better quickly. I was in Madison, WI just 3 hours up the road. 

Got to enjoy some things in Chicago ... Yehudi Menuhin and Ravi Shankar, Man of La Mancha with the original Richard Kiley, the Chicago Art Institute, and then the other place with all the technological stuff ... can't even remember its name.