This is the opening track from English three-piece gothic rock band Esben & The Witch's debut album, Violet Cries. The song is about the medical condition Argyria, which is caused by excessive exposure to silver. Daniel Copeman from the band explained to Spin magazine: "We're drawn to oddities. Argyria is such an interesting disease because it's born of human folly."
Copeman explained the band's name in the same interview: "'Esben and the Witch' is a Danish fairy tale we stumbled across. We like the way [fables] were used as moral compasses."
There was a rumor in the Soviet Union that The Beatles had secretly visited the U.S.S.R. and given a private concert for the children of top Communist party members. They believed the song "Back In The U.S.S.R." was written because of the concert. Actually, some fans still believe so.