This is how The Sirens hypnotize Princess Celestia goes in
[Princess Celestia walks into a garden filled with picnic benches]
Princess Celestia: What?
[She looks around]
Princess Celestia: Where am I?
[Adagio, Sonata, and Aria appear]
Princess Celestia: Who are you?
Adagio Dazzle: The Sirens of the Seas of Answers.
Aria Blaze: You may ask us one question.
Sonata Dusk: Past, future, or present.
Aria Blaze: But be warned.
Sonata Dusk: The truth may be pleasant.
Princess Celestia: I don't know what I've gotten myself into but I'm concerned about some secret Lemon organization. Please. What is to become this mission we're one?
Adagio Dazzle: For the answers you seek.
Aria Blaze: Go ahead, take a peek.
Sonata Dusk: The truth, the sea reveals all, whether big or small.
[Princess Celestia looks into the water]
[She sees Lightning McQueen and Mater arguing]
Lightning McQueen water illusion: I hope I never see you again!
Mater water illusion: Me too!
Lightning McQueen water illusion: Fine!
Mater water illusion: Fine!
Lightning McQueen water illusion: Guess that settles it then.
[The illusions turn and drive away from each other as Princess Celestia gasps]
Princess Celestia: No. Lightning and Mater. Driven apart?
[She looks shocked]
Princess Celestia: That can't be real. It just can't. That just can't be the real answer.
Adagio Dazzle: Their friendship...
Aria Blaze: May not be fake.
Sonata Dusk: But sometimes the wrong path is easier to take.
[Sonata's eyes turn into blue, green, yellow, and white swirls. Princess Celestia's eyes turn into the same and Celestia becomes colorless]
[The Sirens vanish as Optimus arrives]
Optimus Prime: Princess.
Princess Celestia: Optimus.
Optimus Prime: You look... different.
Princess Celestia: I have always been different.
Optimus Prime: Come on, we need to find the others.