United Kingdom, May 12 -- Suzanne Vega regrets turning down an invitation to Prince's house.

The 65-year-old singer was touched to receive a handwritten letter from the late 'Purple Rain' hitmaker - who died from an accidental overdose in June 2016 aged 57 - and he later saw her in concert but left before the end, though offered an invitation for her to spent a day with him at his Paisley Park estate.

However, Suzanne "foolishly" said no, imagining she'd get another opportunity in the future, but never did.

She told Vulture: "I got a handwritten letter from him, which was a thing of art and beauty. He drew a little flower, and he wrote 'Thank God for you.'

"He liked the song 'Luka'. He was at the Grammys when I performed that year. He...