I've been a longtime fan of Sinatra's recordings, and I've always appreciated his general awesomeness. However, I never felt I fully understood or appreciated his influence on pop music. I've heard people say things like "Sinatra invented pop singing" but I could never wrap my head around that. I know Sinatra was a pioneer of concept albums, and I get that he went from being a crooner to singing in a more commanding full voice. But how exactly did he change the face of singing as we know it? (assuming it's not hyperbole to say so).