Content warning: This story includes descriptions of violence that may be distressing to some readers.
Throughout her career, Sinéad O'Connor was an acclaimed singer-songwriter. But there is one song in particular that would be her most recognisable hit - 'Nothing Compares 2 U'.
The Irish singer who passed away this week aged 56, saw herself not as a popstar like everyone wanted her to be, but instead as "a protest singer".
Her rendition of the song went incredibly well on the charts - but not everyone was a fan.
'Nothing Compares 2 U' is a song written and composed by Prince. The song wasn't widely known at the time it was originally released, and it was performed by '80s band The Family - a band Prince formed and signed under his music label.
Five years later, O'Connor recorded a version of the song - and it became a worldwide hit.
Watch the trailer for Nothing Compares, the documentary about Sinéad O'Connor's life. Post continues below.
O'Connor and Prince had never properly met prior to her releasing her recording of 'Nothing Compares 2 U' in 1990.