Bob was the bass player and lyricist for the first two Ozzy Osbourne albums. Here's how he wrote songs like "Crazy Train" and "Mr. Crowley" with Ozzy and Randy Rhoads.
How four songs portray Shakespeare's character Ophelia.
Nick made some of the biggest videos on MTV, including "The Final Countdown," "Heaven" and "Don't Know What You Got (Till It's Gone)."
His keyboard work helped define the Muscle Shoals sound and make him an integral part of many Neil Young recordings. Spooner is also an accomplished songwriter, whose hits include "I'm Your Puppet" and "Cry Like A Baby."
Mike is lead guitarist with Tom Petty & the Heartbreakers, and co-writer of classic songs like "Boys Of Summer," "Refugee" and "The Heart Of The Matter."
The head of Drake's estate shares his insights on the late folk singer's life and music.