"If Elvis ..is the definition of rock, then rock is remembered as showbiz...It becomes a solely performative art form, where the meaning of a song matters less than the person singing it. It becomes ...if Dylan...becomes the definition of rock, everything reverses. In this contingency, lyrical authenticity becomes everything: Rock is galvanized as an intellectual craft, interlocked with the folk tradition...The fact that Dylan does not have a conventionally "good" singing voice becomes retrospective proof that rock audiences prioritized substance over style..."