On this episode of Sound Up! Grammy winning producer and S-Curve Records President Steve Greenberg joins us to discuss: Are Groups A Thing of the Past? Plus, we have music news on the status or lack of status on Rage Against the Machine, Paul McCartney's inspiration behind the lyrics to "Yesterday," who Selena Gomez is a "Super Fan" of, and Mark has his live concert review of Jason Isbell live at Radio City Music Hall. 
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