So, Stevie Wonder is playing a gig in Tokyo. During a pause between songs he hears a voice from the audience: "Play a Jazz chord!" This joined by another voice: "Yes. Play a Jazz chord!" Then another and another and it soon seemed like most of the audience were shouting: "Play a Jazz chord!"
"Wow" Stevie thinks "They must really like their jazz in Japan". So Stevie launches into a jazz number and really gets into it. He finishes the number, expecting tumultuous applause. But unbelievably, there was total silence!
Then the chant starts up again: "Play a Jazz chord!" "Play a Jazz chord!" "Play a Jazz chord!" "Hmm" thinks Stevie "maybe they would prefer Jazz funk..?" So he gets into a jazz funk number, but when he finishes, again silence.
Feeling frustrated, Stevie decides to go back to his routine set. Starting on his next number the crowd went wild, cheering and clapping and when he started to sing the whole audience joined in "A jazz chord to say I ruv you!"