As far as a deeper interpretation, I feel like there might be a subtle observation on celebrity. Being a celebrity forces you to live in a glass case. The more special you are the less you are free to engage with others randomly in society and the more entombed you become. To an extreme, a person might forget how to sing\forget how to live because they are so far disengaged because their existence is one of preservation, not freedom.
As far as a deeper interpretation, I feel like there might be a subtle observation on celebrity. Being a celebrity forces you to live in a glass case. The more special you are the less you are free to engage with others randomly in society and the more entombed you become. To an extreme, a person might forget how to sing\forget how to live because they are so far disengaged because their existence is one of preservation, not freedom.