I spent the whole show backstage. I didn't even realize that Dennis passed. It was only at the last when Aria Hendricks talked about Dennis before she sang "The Nearness of You" that I knew. None of the cats backstage were being mournful. Whenever anyone said anything about Dennis, it was a joyful story. I introduced Mose Allison in the concert, and when Mose was singing, John Scofield and others backstage remembered that Dennis knew all the lyrics to Mose's songs. I was amazed by the who's who backstage. I remember looking over and all the drummers were hanging out. Jack DeJohnette. Kenny Washington. Lewis Nash. Paul Motian. And then Matt Wilson walked by. They and all of the others at the concert knew, learned from, laughed with, loved, and were swung by Dennis Irwin.