I saw KJ live in I believe the mid-70s at Orchestra Hall in Chicago. It was a memorable evening for a few reasons. I had my Dad with me as I knew he was a keyboard person.
We got seated and shortly after a very drunk person was seated behind us. Shortly after he was seated he proceeded to vomit. I finally got the ushers to remove him and get the mess cleaned up. All this before the concert started.
Towards the end of the first act someone about 3 rows back from the front started coughing. Instead of leaving they continued coughing. At the break before KJ left the stage he looked into the audience in the general area of the person coughing and said “I hope that bothered you as much as it did me” and he walked off.
At the start of the 2nd act as he got into the song he started to cough in rhythm with what he was playing.