For songwriters, Johnny represents the American man. He has been angry, cool, magic, a rebel and, of course, marching home.
Smith breaks down some of his worship tracks as well as his mainstream hits, including "I Will Be Here For You" and "A Place In This World."
Into the vaults for this talk with Bolton from the '80s when he was a focused on writing songs for other artists.
The Red Hot Chili Peppers have some rather unusual song titles - see if you can spot the real ones.
The men of Sparks on their album Hippopotamus, and how Morrissey handled it when they suggested he lighten up.
Many actors have attempted music, but only a few have managed a hit. Do you know which of these thespians charted?