curtain raiser
n.β Β«The petition was given to the media in plenty of time for reporters to write what we in the business like to call βcurtain raisers,β in advance of a big news conference that was held on Tuesday. Let it never be said that environmentalists donβt know how to generate good publicity.Β» ββThis Climate Is Surely Full of Hot Air” by Joe Nocera New York Times Sept. 22, 2007. (source: Double-Tongued Dictionary)