"playhouse stage" is correct and usable in written English.
You could use it when referring to the stage of a playhouse or theater, or when referring to a role or performance on that stage. For example, "The new play was a great success on the playhouse stage."
She probably won't be much happier to find herself on the Dunstan Playhouse stage this time around – it's still a long way from Broadway or Montparnasse.
He withdrew from directing a production of Of Mice and Men due to grace the Westport Playhouse stage this autumn and abruptly cancelled a scheduled appearance on the late night DavidLetterman Show.
Dr. Adams, Hofstra's president from 1944 to 1964, wrote his doctoral dissertation, "The Structure of the Globe Playhouse Stage," and then put 10 years of further study into the subject before its publication by Harvard University Press in 1942.
Opera stars are often known for their girth and size, but the performers scheduled to occupy the Kaye Playhouse stage at Hunter College this weekend are little more than two feet tall.
Performers such as Angela Bassett, Patrick Dempsey, Laurence Fishburne, Sharon Lawrence, JoBeth Williams, Kelly McGillis and Orlando Jones have graced the Playhouse stage.
Unlike the West End, this replica of William Shakespeare's playhouse stages no hoary farces or musical spectaculars, but 16th- and 17th-century plays.
Director Thom Southerland, best known for his Southwark Playhouse staging of Titanic, looks to change that with a European premiere at the same venue.
Pasadena Playhouse stages a sleek, 'sexy' comeback.
This autumn, the Playhouse will stage Darkness, Darkness adapted from John Harvey's Nottingham-based Resnick detective novels (from September 30).
Pearce Institute, Wed to 22 Mar LG A co-production with West Yorkshire Playhouse, this stage version of Leo Tolstoy's great novel of doomed love is directed by Ellen McDougall.
According to a statement from the playhouse, the stage version will largely re-tell the movie's plot, about a Seattle widower, his son and a woman who becomes obsessed with their heartbreak.
