The sister of late pop superstar Prince has promised fans the musician’s vast collection of unreleased music will be made public.

Tyka Nelson said the Purple Rain singer, who died in April 2016 aged 57 “always wanted people to hear his music”.

Prince was renowned across the music industry for building up a vault of unreleased albums and reportedly held more than 50 fully produced music videos which are yet to see the light of day.

BRIT Awards 2006 – Earls Court
Prince performs on stage at the Brit Awards 2006 (Yui Mok/PA)

Nelson was speaking as she announced a the first official retrospective exhibition celebrating her brother’s legacy and showcasing hundreds of never-before-seen artefacts from his famed Paisley Park estate in Minnesota.

She told the Press Association: “I tell people if I don’t fulfil his wishes I don’t want to get to heaven and have him slap me.

“He wanted to share his music, a lot like my father. As soon as I walked in the room we’d go over to the piano or the computer and he’d go I wrote a new song listen to it.”

Prince's Purple Rain jacket
Prince’s Purple Rain jacket (John Wagner Photography

She added: “He always wanted people to hear his music and I definitely would not leave this planet until I made sure his music is out there.”

Nelson said the My Name Is Prince exhibition, which will run at The O2 in London for just three weeks, will give fans an opportunity to “feel and see” the musician.

It will feature an array instruments, stage outfits, awards and handwritten song lyrics with some items leaving Paisley Park for the first time ever.

The original bass which became the inspiration for the Cloud guitar (John Wagner Photography)
The original bass which became the inspiration for the Cloud guitar (John Wagner Photography)

It includes Prince’s diamond studded cane from 2015, a raspberry beret cloud suit from 1985 and the Gibson L65 guitar he used on his national television debut on American Bandstand in 1980.

It’s 21-day run reflects Prince’s 21 record-breaking sold-out concerts at the O2 in 2007.

Nelson said: “You can watch him on tape but to actually see the cane that close or a guitar he had it almost takes your breath away.

“Every time I go to Paisley Park I’m awe struck again and I’ve been there quite a few times.”

She also spoke about her difficulty in acknowledging her brother’s death, with it not hitting her until four months after.

“After August it became real, it hit me that he’s not coming back,” she told the Press Association, adding: “It’s been a struggle and it’s a day-to-day process.”

:: My Name Is Prince will run at The O2 in London from October 27 with tickets on sale from August 25.