On Glen's résumé: hit songwriter, Facebook dominator, and member of Styx.
The revered singer-songwriter talks inspiration and explains why she put a mahout in "Drop the Pilot."
A top country songwriter, Barry talks about writing hits for Little Big Town, Tim McGraw and Jason Aldean.
These overtly religious songs crossed over to the pop charts, despite resistance from fans, and in many cases, churches.
The good doctor shares some candid insights on recording with Phil Spector and The Black Keys.
The rock revolutionist on songwriting, quitting smoking, and what she thinks of Rush Limbaugh using her song.