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Electric Light Orchestra’s ‘Mr. Blue Sky’ is one of rock’s most uplifting anthems, but it was born from a long stretch of gloom and creative frustration. In 1977, ELO front man Jeff Lynne retreated to a chalet in the Swiss Alps to begin writing what would become the band’s ambitious double album Out of the Blue. For nearly two weeks, the weather was miserable—endless rain and heavy clouds that matched Lynne’s writer’s block. Then, one morning, the skies suddenly cleared. Sunlight poured into the room, and the mountains finally came into view. That moment of transformation sparked his inspiration, and ‘Mr. Blue Sky’ was written almost entirely that same day.

The song became the joyful finale of Out of the Blue’s four-part suite, Concerto for a Rainy Day. The suite tells a story through music—starting with stormy sounds and culminating in the bright, triumphant celebration of sunshine in ‘Mr. Blue Sky.’ Lynne described the song as “a celebration of the good times after the bad,” symbolizing renewal and optimism.

Out of the Blue itself marked one of ELO’s creative peaks. Released in October 1977, it featured hits like ‘Turn to Stone,’ ‘Sweet Talkin’ Woman,’ and ‘Wild West Hero.’ The album’s lush production and orchestral rock style cemented ELO’s reputation as one of the most inventive bands of the decade.

While ‘Mr. Blue Sky’ initially reached only modest chart positions, its legacy has grown exponentially. Today, it’s one of ELO’s most beloved songs—an enduring reminder that after the darkest storms, the blue sky always returns.