Complex sentence: The film has been in production for years before it's release, under the working title of "A Night at Tony Pastor's", with a 1942 article announcing that George Raft would play the lead role.
Split into simpler sentences: The film has been in pre-production for years before it's release with the working title of "A Night at Tony Pastor's". A 1942 article announced that George Raft would play the lead role.