Mr. Blue Sky is a song by the rock group Electric Light Orchestra.
The song forms the fourth and last track on the "Concerto for a Rainy Day" suite on side three of the original two-LP set. The song features a heavily vocoded voice singing the phrase "Mister Blue Sky", (from 2:23 to 2:39, or from 2:20 to 2:34 on the 30th anniversary CD). Although the ending vocoded voice may sound like "Mister Blue Sky-yi", it is actually "Please turn me over" as it is the end of side three, and the listener is instructed to flip the LP over. This was confirmed by original keyboardist Richard Tandy, who did confirm the actual lyric to members of the Showdown ELO fan list. Fans who remember the original 1978 promo video saw the title of the song displayed at the end during the vocoded voice, and to this very day, mistakenly believe that the vocoded voice says "Mis-ter-blue-sky-yi", in the same way as it does earlier in the song. It is certainly understandable that the director of the 1978 promo might not have known the words at the end, and thus the misunderstanding by fans for thirty-one years.
The song was the third Hot 100 top 40 single to be taken from the album Out of the Blue. The single reached number 6 in the UK and number 35 in the USA. It was also released on special limited edition blue vinyl.
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