I was shooting from backstage during a performance when Mr. Whalum was on stage. He stopped playing (multiple artists were performing at the time) and walked over to me and asked if I had a $20 bill. I knew exactly what he needed. Mind you, in my days of playing Sax in High School $1 bills worked for us! One of the keypads on his horn was sticking and the makeup of a bill has the right properties, when pulled through the closed key/pad, to stop it from sticking. He asked me how I knew what he was doing. After a brief exchange, he headed back to the stage for another phenomenal performance. You must see this man play!!