Once you’ve solved the Tree & Music Box puzzle, the 5 Bottle Puzzle, and the Vine puzzle, you will be able to remove more pieces from the mirror by the front door. Click on those and you’ll be in the audience of an opera singer.
You’ll be required to move 4 props into position. Use the left rope by dragging/holding it up or down to move the prop piece left or right. Sometimes you’ll need to hold the rope up to get the prop to come out from the stage wings.
Use the right rope, by dragging it up or down, to move the prop piece up or down.
Video of the puzzle can be seen here: Opera Singer Puzzle on Youtube
Move a cloud, the moon, another cloud, and a star into their shadowed locations on the back wall.
Then another rope will drop. Pull on that to hang her, then pull on it again to end the scene.