Prince blasted the US music industry and radio station accusing them of 'trying to ram Katy Perry and Ed Sheeran down our throats' in astonishing handwritten notes written before his death.

The notes were found among photographs and handwritten lyrics inside the star's Minnesota home following his death in 2016 aged 57.

Commenting on Sheeran and Perry's dominant radio airplay, Prince claimed: 'We don't like it no matter how many times they play it.'

Prince pictured in 1990, made an astonishing attack on Katy Perry and Ed Sheeran claiming that the US music industry was 'ramming them down our throats'. He said: 'We don't like it no matter how many times they play it'

Katy Perry, pictured, was among the stars criticised by Prince in handwritten notes

He also attacked Ed Sheeran, pictured, over the constant airplay in the United States

According to The Guardian's Weekend magazine, Prince's estate has been examining the massive archive in an effort to generate income.

The star was found dead at his Paisley Park home in April 2016.

Dan Piepenbring had been collaborating with the star before his death about writing his memoir.

Piepenbring had been working on the project for three months before the star's death in April 2016.

In November 2016, Minneapolis city council granted planning permission to the late star's estate.

Paisley Park Facilities LLC, which operates the property, was previously granted a temporary permit by the city to open it as a museum and gave limited tours this month.

An early-purchase general admission ticket to Paisley Park will cost $38.50 and a VIP tour ticket will be $100.

Visitors to Paisley Park will be able to see Prince's flamboyant concert wardrobe as well as his instruments and motorcycle collection, the site said.

The musician blended elements of jazz, funk, R&B, disco and rock in a prolific output of more than 30 albums that have sold more than 36 million copies in the United States alone since 1978. His hits included "Purple Rain," "1999," "When Doves Cry," and "Little Red Corvette."

Prince died from an accidental, self-administered overdose of the powerful painkiller fentanyl, medical officials said in June 2016.