Adele. The song is "Someone Like You". https://youtu.be/hLQl3WQQoQ0?list=PLBrbKtPlBbNc4XP_O9T1x55QnRh51hYuM. I picked this photo for three reasons. First principle was rule of thirds. As you can see the photographer placed her on the side instead of the center which attracts the viewer and she is focused. Secondly, photographer used the quality of light. Adele's face has the catchlight on both eyes and the lighting is so perfect on her face.