The legendary Schmitt Music mural, right around the corner from the conference. Here is a WCCO story with a bit of background: http://minnesota.cbslocal.com/2014/03/30/finding-minnesota-the-mystery-musical-mural/
Here is a photo of a young Prince in front of it: https://www.schmittmusic.com/wp-content/uploads/2016/06/prince.jpg
