Way back in the distant days of 2010, you might have chanced on a video of Justin Bieber, sitting in a recording studio and speaking—with genuine feeling—about a particular social problem he wanted to make right. World hunger, perhaps? Childhood diseases? Well, not quite. The Biebs was concerned about audio equipment.
How Beats Used Celeb Marketing to Become Millennials' Favorite Audio Brand
From Justin Bieber to Lil Wayne, these headphones are on everyone's ears
