text: what do john lennon and stevie wonder songs have in common?   is this a riddle? something someone would have to have knowledge of music theory to know?  they both wrote songs of hope, peace, and togetherness, pointing out what's wrong with the world and how to fix it.   although lennon wrote plenty of songs about misery and despair, too, and just plain strange stuff. while most of wonder's songs are pretty straightforward.   .