Once upon a time, composers ran Hollywood. As conductor John Wilson reminded us last night, 44-time Oscar nominee and movie composer Alfred Newman became so powerful as second in command at MGM that he had two security guards posted at his office door. Any directors attempting to enquire how the score to their movies was getting along were told to clear off. Big, bold orchestral scores were Hollywood's crown jewels. At the Barbican last night we got a rare chance to inspect them close up. And how they dazzled us.