4-14: Cincinnati — World Choir Games. 20,000 singers compete in the Olympics of choral music. 9-15: St. John's, Newfoundland — Sound Symposium. Crest-of-the-wave music includes the "Harbour Symphony" written for the horns of ships. 25-29: Wrangell, Alaska — Bearfest. Festival for bruins' fans. 27-Aug. 12: London — Games of the XXX Olympiad. More than 10,000 athletes compete for medals. 28-29: Thunder Bay, Ontario — Battle for Fort William. Muskets muster for a War of 1812 commemoration. 28-Aug. 4: Trondheim, Norway — St. Olav Festival. Historical market turns 50.
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