Al Jean just revealed that the clip shown at the Comic-Con, is a preview of the 600th episode of The Simpsons, the 27th Treehouse of Horror episode, Treehouse of Horror XXVII, which will air on October 16th, 2016, as the 4th episode of Season 28. The video was posted together with Homer’s clip early on Animation on Fox on youtube. The theme was sung by Judith Owen, wife of Harry Shearer.

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