Brian has unearthed outtakes by Fleetwood Mac, Aretha Franklin, Elvis Costello and hundreds of other artists for reissues. Here's how he does it.
The evolution of the symbol that was Prince's name from 1993-2000.
A top country songwriter, Barry talks about writing hits for Little Big Town, Tim McGraw and Jason Aldean.
Cain talks about the divine inspirations for "Don't Stop Believin'" and "Faithfully."
"25 or 6 to 4" to "Semi-Charmed Life" - see if you can spot the songs that are really about drugs.
The leader of the Modern A Cappella movement talks about the genre.