The collaborations discussed in this episode:

• When Eric Clapton was brought in by The Beatles...

• When the legendary backup singer Merry Clayton was brought in by The Rolling Stones...

• When Duane Allman took Wilson Pickett to the next level and birthed Southern Rock...

• When Stevie Wonder created a signature sound on the harmonica...

• When Jeff Beck joined Jon Bon Jovi...

• When Adam Duritz and Mike Campbell helped Jakob Dylan...

• When Elvis Costello helped Squeeze with a hit song...

• When Eddie Van Halen answered the call from MJ and Quincy Jones...

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