Lyor Cohen is more than just the boss of YouTube Music. From Rush Productions and Def Jam in the early days of the rap game, through running Warner Music and starting his own label, 300, he’s the operator who helped shape the modern music industry. And, now, he tells Music Week, he wants to take it to a whole new level…

Lyor Cohen is allowing himself a rare moment of nostalgia.

Like a shark, YouTube’s global head of music ...