At a convention in Chicago years ago, there was an upscale reception at the bar atop the Sears Tower in Chicago....there was a piano bar set up right at a corner, fully windowed area -- and my boss decided to do the Karaoke thing right there ----- beckoning me to come closer to the "entertainment area".
After about four double-doubles, I finally ventured over; thank goodness it wasn't windy, and the 99th floor wasn't wiggling.
But Lake Michgan looks awesome from up there in summer, so aqua blue.