Hey Dark, I replied to you about RED on the talk page, regards.--SKATER Speak. 02:26, 6 May 2010 (UTC)
If you read the whole of the article 'Letter from Aleppo' it is clear that Dido and Aeneas was performed at Priest's School no later than summer 1688. The conclusion is based on a letter sent from Aleppo to England by Rowland Sherman. He encountered the opera before he left England in the summer of 1688.