MY FRIEND Carlos Cuano is a big snob when it comes to music, especially rock music. He hates pretentious bands and calls them copy cats. He despises revivals. He has a special hatred for Adam Lambert. But he has a list of bands he adores, and he knows the songs, the lyrics, the writers, and their life stories by heart. He recites the history of rock as if he did an academic dissertation on it. "But 'rock' is too vague a term," I told him once. "How do you define it?" He looked at me with serious eyes and said, pointing to his heart, "It's in here."