"2+2=5" Radiohead

-What is the song talking about lyrically?
The song is talking about how a government is altering people's lives without them knowing. When they finally realize this, it is too late to fix because no one was paying attention.

-How does the music mimic or help push the message?
The music is quiet and calm at first but then it becomes very loud and harsh when the singer says "pay attention." This puts emphasis on the stupidity of the people who didn't pay attention to the government.

-The title is an allusion to 1984. Explain the connection.
It alludes to 1984 because in the book, Winston directly says that in the book. He is talking about how persuasive the government is and if they were to tell people 2+2=5, people would believe it.