This is a short scene where we learn of Cassio's intentions to restore himself.
Cassio
This is a short scene. Cassio brings along musicians to play music for the awakening of the couple, but they are dismissed by Othello.
Cassio tells Iago that he has asked Emilia to arrange for him to see Desdemona.
Emilia
Emilia tells Cassio that she has overheard Othello say that Cassio will have to wait a while for the sake of decency, but he will be restored to his place at the first opportunity.
However, Cassio still insists on speaking to Desdemona alone.
Omens
The fact that the couple have endured a sleepless night is ominous.
The world is apparently not in harmony.
Private and public
The scene’s purpose appears to be to reinforce Cassio’s rejection by Othello, who ominously dismisses the musicians hired by Cassio as a celebration of the consummation.
It is another example of how bedroom intimacy between Othello and Desdemona is disturbed by external noise, an invasion of the private by the public, and love by war.
Othello then goes off to inspect the island’s fortifications instead.
Dis-enobling
Since an appreciation of gentle music was considered to be a noble and civilising attribute, it may be significant that Othello does not care for it, preferring instead the trumpeting of war.
This may symbolise his ‘dis-enobling’ in the tragic pattern at work.
Comedy
The pause in tragic events here—via the musicians and the incompetent Clown—may give the audience a breather from the intensity of the action so far.
Clowns (or Fools) are often used by Shakespeare to expose the frailties and true condition of characters within tragedy.
However this scene is often cut from modern productions of the play.
The comedy is truncated and not fully developed here.
Act Three, Scene Two
This is another short scene.
Ironic counterpoint
Here, Othello attends to the fortifications on the island of Cyprus.
The fortifications on the island are strong but his own are not so resilient from the forthcoming attack by Iago.
The scene therefore works as an ironic counterpoint to what follows.