Jimmy Buffett's cause of death: Margaritaville singer 'died following secret skin cancer battle' after being diagnosed four years ago and had Paul McCartney sing to him in his final days

Music legend Jimmy Buffett died after a secret years-long battle with skin cancer, sources have revealed.

The singer-songwriter's death aged 76 was announced on Friday night, and an insider told TMZ his demise came four years after he was diagnosed with skin cancer that turned into lymphoma.

'He lived his life in the sun, literally and figuratively,' they said, adding that Buffett had began hospice care on Monday. Insiders said his failing health led to an outpouring of support from friends and family, and his friend Paul McCartney reportedly visited the Grammy nominee at his home within the last week to sing to him.

The 76-year-old epitomized beach-bum escapism with his hit 'Margaritaville,' and turned the song that celebrated loafing into a billion-dollar business empire.

'Jimmy passed away peacefully on the night of September 1st surrounded by his family, friends, music and dogs,' a statement posted to Buffett's official website and social media pages said. 'He lived his life like a song till the very last breath and will be missed beyond measure by so many.'

The icon is survived by his wife, Jane Slagsvol, daughters Savannah and Sarah, and son Cameron.