This is simply the work of a surly photographer imposing into another celebrity's private life; the photograph was taken on a backstreet while Jennifer was shopping with a friend, she didn't spark up live on stage or television. Celebrity or otherwise, how Jennifer deals with her post-cancer recovery is her business. And hers alone.
It has been suggested that there are seven different ways that music makes people feel things. Some of these are very immediate and common to all, like the brainstem response to sound, the potential for synchronising activity to the rhythms of music, or the emotional contagion of the emotions expressed in the music.