In Phantom of the Opera
What did the first note say?
In order to find out what the first note said in Phantom of the Opera, you would generally need to refer to the original source material, which is the 1910 novel "The Phantom of the Opera" by Gaston Leroux. Alternatively, you could also refer to the stage adaptation or one of the film adaptations of the story.
The first note in the story is sent to the opera managers, and it is famously known as the "Opera Ghost's Letter." In this letter, the mysterious Phantom demands that the lead role of the opera, "La Carlotta," be given to a young and unknown singer named Christine Daaé. If the managers fail to comply, the Phantom threatens to unleash chaos and destruction upon the opera house.
To find the exact wording of the first note, you would need to read the original novel or watch a performance or adaptation of Phantom of the Opera where the content of the note is depicted or read out loud.