As 1987 approached, Prince, the singer/songwriter/producer/musician who had hit the big-time with 'Purple Rain' in 1984, was entering a period of unrivalled creativity in the history of music. After disbanding his band The Revolution, he recorded an entire triple album entitled 'Crystal Ball', among other projects, but his record company refused to release it.
So he went back into the studio and recorded this, including the title-track which was written and recorded in one day. As a double-album, it may not have met with the commercial success of some of his previous or subsequent albums, but it received the sort of critical praise that is reserved for only the truly great pieces of modern musical work.
He leaps from genre to genre with ease, from the prototype rap of 'Housequake' to the classic ballad 'Slow Love' and the sumptuous, gender-bending 'If I Was You Girlfriend' or the classic rock of 'The Cross' - whatever you want, it's here.
Some of the music may sound a tad dated, but the quality shines through from beginning to end. If you were looking for proof of this man's musical genius, look no further - if God made music, this is what he would make.