Nicoulas Czarnecki / WENN

Dr. Dre with Red Sox Beats

Producer and rapper Dr. Dre unveils his "Beats by Dr.Dre" headphones during Opening Day at Fenway Park on April 4, 2010. The headphones were brand-new then, and the company grew rapidly: Dr. Dre sold the company to Apple in 2014 for $3 billion.

See our biography of Dr. Dre