Under examination by the camera, a human body becomes for its inhabitant a field of betrayal more than a ground of communication, and the camera's further power is manifested as it documents the individual's self-conscious efforts to control the body each time it is conscious of the camera's attention to it.
When we sing the blues, we're singin' out our hearts, we're singing out our feelings. Maybe we're hurt and just can't answer back, then we sing or maybe even hum the blues.