We’ve all heard the complaints about the current Music 3.0 music industry model: physical product doesn’t sell anymore, download sales don’t make up for the shortfall, and streaming music cannibalizes sales and pays a pittance in royalties. Then let’s heap on the accusation that music today is so formula and soul-less and generally a shadow of what it once was. But how does that explain the recent success of Mumford & Sons and Adele? Here are two principles that hold true in any age.