Remember that different performances will generally focus on different interpretations of the play. One may focus on Othello and Desdemona's relationship as the major cause of the tragedy. Another performance will focus on Iago and his ambitions.
I think what struck me about the performance I've linked to below is the extent to which Othello is presented as animalistic and Iago's intelligent criminal mind.
Click here for Radio 4's adaptation of Othello broadcast on Saturday 12 May starring Lenny Henry in the lead role.
You can refer to different performances in your essay as a way of referring to different interpretations of the play. This is one of the comments you can make about a quotation.Here's an example
