Well, Andrés, I hadn't know this, but my Webster's New World Dictionary says it's pronounced exactly the same as "show." The dictionary says it's an archaic (old) form of "show."

Of course, a very archaic American, the late Ed Sullivan, always said that tonight we were going to have a "really big shoe."

Oh, and don't try to learn English from a choir - choir directors are all weird. This evening our choir director wanted us to sing about the "Lord of the Dawnce." And if we don't sing it her way, she'll kill us. Choir directors can be quite violent if they don't get their way.
-Joe Offer-