Macbeth
Shakespeare's day to the Interregnum

The only eyewitness account of Macbeth in Shakespeare's lifetime was recorded by Simon Forman, who saw a performance at the Globe on 20 April 1610. Scholars have noted discrepancies between Forman's account and the play as it appears in the Folio. For example, he makes no mention of the apparition scene, or of Hecate, of the man not of woman born, or of Birnam Wood. However, Clark observes that Forman's accounts were often inaccurate and incomplete (for instance omitting the statue scene from The Winter's Tale) and his interest did not seem to be in "giving full accounts of the productions".

As mentioned above, the Folio text is thought by some to be an alteration of the original play. This has led to the theory that the play as we know it from the Folio was an adaptation for indoor performance at the Blackfriars Theatre (which was operated by the King's Men from 1608) – and even speculation that it represents a specific performance before King James. The play contains more musical cues than any other play in the canon as well as a significant use of sound effects.
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