I doubt that it was planned this way, but the evening rehearsal of The Lord of the Rings: The Fellowship of the Ring begins at such a time that musicians and staff who may be taking in the St. Louis ritual of Opening Day at Busch Stadium--unless there are extra innings--can cheer the Cardinals and be back in time for Frodo.
An early-bird view before the stadium fills and the men with the birds on the bat take the field.