Grammy-award winning producer Rodney Jerkins (pictured) has questioned Pandora founder Tim Westergren over the "embarrassing" payouts songwriters and producers earn from their tracks being listened to on his internet radio platform.

Speaking from the audience at the Code/Media conference in California, Jerkins asked Westergren what he was doing to do to change the disparity between payouts for songwriters/composers and performers.

Raising the example of Pharrell Williams, who earns $250,000 from Pandora for his hit song Happy as a ...