Out of the Blue

Out of the Blue is the seventh studio album by the British rock group Electric Light Orchestra (ELO), released on 24 October 1977 in the United States and four days later in the UK on 28 October. Written and produced by ELO frontman Jeff Lynne, the double album is among the most commercially successful records in the group's history, selling about 10 million copies worldwide by 2007.

Jeff Lynne wrote the entire album in three and a half weeks after a sudden burst of creativity while hidden away in his rented chalet in the Swiss Alps. It took a further two months to record in Munich.

Out of the Blue was one of the first pop albums to have an extensive use of the vocoder, and helped to popularize it.