When he talks about the

When he talks about the movies, John Williams still can’t help grinning. In his 70th-birthday season and with more than 90 film scores behind him, he still enjoys composing music, and when he talks about his work, he’s as happy as a kid at the popcorn stand. This summer, Williams has contributed to two giant productions in the theaters, ”Minority Report” and ”Star Wars: Episode II – Attack of the Clones.” When Williams was in town a few weeks ago to conduct the Boston Pops, he took a few minutes off from his busy schedule to talk about what he has been up to. The Boston week was a brief holiday from composing, a stopover between London, where he saw a rough cut of ”Harry Potter and the Chamber of Secrets,” and Los Angeles, where he is now busy mapping out the score. Williams will compose about 40 minutes of the music, including all the new thematic material; William Ross will develop the themes for the full score. (From The Boston Globe.)