As the doctors jot it all down, with they pens and pencils
The same ones that took away his voice
And just left this instrumental,
The doctors are the public, whether us or the media. The aforementioned parties took away his voice as an individual by flooding the world with fads and norms. He eventually became addicted to TV and the opinions shown there. Thus now, he just follows the popular instrumental drone of what he sees and has no individuality.
I believe that he had a more direct meaning when speaking about the doctors, i think he is saying that it is the scientists that study our actions so they can increase the media and have it more personalized and how they are always watching (Big Brother Theory) and that he no longer has his own voice or sense of individuality because of the pressure te media puts on a person to go along with the most current fad or trend. The instrumental is nothing without the vocals which are what separates the track from a different one the vocals are where the meaning and the emotion lie in music, so without them the song is emotionless and meaningless…
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