The first shot we see of Sebastian is a eye level shot, continuing the illusion that we, the audience, are part of the ensemble, adding audience participation into the film. However, despite feeling equal to Sebastian, we do not see his face, as the camera is behind him. This makes us feel as if there is something mysterious about Sebastian, or something that we are yet to find out about him. It could also show his closed personality, which could also be why he is wearing sunglasses. The camera pans to the left, before it moves to Mia, but despite being at a side on view of Sebastian, we still son't see a full view of his face before he is out of shot.
This is the first time the audience get to see a front view of Sebastian's face, but he is in the background, showing how he is more of a secondary character. So without even hearing a word of dialogue from Sebastian, we can tell through the camerawork that he is mysterious and secretive, but he is more of a secondary character in the plot of the film. However, despite all of this, the way the camera poses Sebastian, the window frame seems to show him as if he is in a picture frame, like a work of art, which would seem important, completely changing this idea that he is secondary and unimportant to the plot.
This shot is our first introduction to Sebastian as a character, as we see him interact with his sister. He seems to be caring to those close to him, as we can see that he has his hand around her back. The camera keeps at an eye level to Sebastian, never looking down at him or up to him, which keeps this idea that the audience are equal to Sebastian, which makes the audience feel like a part of the film.
The first 20 minutes of the film has shown Sebastian as this mysterious, yet caring person, but this scene flips this idea on its head. As he is angry at being fired, even though Mia is trying to make him feel better, he just walks past her and bums into her shoulder. The camera is now lower than eye-level, and is more in tone with Mia, which is a throw back to the idea from the opening shot, that Sebastian is a secondary character. The camerawork gives the impression that he jumps between a main character and a secondary character, which could reflect Sebastian's uncertainty about how to pursue his dream of being a jazz player.