The musical artist who originally wrote and recorded, but never released the song "Nothing Compares 2 U" was Prince. Prince's original 1984 recording of the song was not released until 2018, when it was issued as a single by Warner Bros. Records in conjunction with his estate.

In addition to the release, Prince's version of the song was given its own music video in conjunction with being recorded in the music studio on April 19, 2018. The video consists of edited rehearsal footage shot in the summer of 1984. The song was later included as the final track on Prince's 2019 posthumous compilation 'Originals'. This is an album which contains a multitude of demo recordings Prince had made for other artists such as the Bangles and Kenny Rogers.

Prince Rogers Nelson (aka Prince) was an American singer, songwriter, musician, record producer, dancer, actor, and filmmaker. He had a career spanning four decades and was known for his eclectic work, flamboyant keyboards, and unique synthesizer. He lived from June 7, 1958 – April 21, 2016.

More Info: en.wikipedia.org