The ageless super-producer's latest hit isn't a song, but rather a line of headphones. In August handset maker HTC paid $300 million for a 51% stake in Beats by Dr. Dre, the headphone company he co-founded with Interscope chief Jimmy Iovine in 2006. Each owned about a third of the company, pocketing about $100 million apiece, before taxes, from last summer's deal.
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