William MacArthur MacKenzie (27 March 1957 – 22 January 1997) was a Scottish singer and songwriter, known for his distinctive high tenor voice.

While MacKenzie was quoted as saying the marriage was made to stave off deportation so that he could sing with the New Orleans Gospel Choir – calling his wife a 'Dolly Parton type' – Dummar still believes the pair were in love.

(Chloe's brother was Melvin Dummar, who claimed to be the "one sixteenth" beneficiary of the estate of Howard Hughes until the case was thrown out in 1978.)

In his lifetime, MacKenzie did not publicly label his gender identity, but in the aforementioned Time Out interview, he stated: "I'm just waiting for the day when we're all what we were intended to be...

"[5] MacKenzie made allusions to androgyny and cross-dressing in his solo songs "Falling Out With the Future" and "Velvet", as well as an unreleased demo with Steve Aungle, "Gender Illusionist".

Later the pair united to perform "Amazing Grace" on a Scots Hogmanay television programme, and each donated a song to the other's forthcoming studio album.

"Chained" proved a highlight on the next Haig album, although MacKenzie's version of "Reach the Top" remained unreleased after the Associates' The Glamour Chase project was shelved by WEA.

In 1987, he wrote lyrics for two tracks on Yello's fifth studio album One Second: "Moon on Ice", which he sang himself, and "The Rhythm Divine", which was sung by Shirley Bassey and was released as a single.

On 22 January 1997, MacKenzie killed himself by overdosing on a combination of paracetamol and prescription medication in the dog kennel in the garden of a bungalow he owned at Auchterhouse, Angus.

For her fifth studio album Medúlla (2004), Icelandic singer Björk considered singing a beyond the grave duet with Mackenzie using recordings given to her by his father, but eventually decided against it.

[12] In 2006, Norwegian singer Jenny Hval, under the name Rockettothesky, released her debut single "Barrie for Billy MacKenzie" as a tribute.

It tells the story of his life through the eyes of four fictional characters, and the title of the play derives from the name of the Dundee cemetery where MacKenzie was buried.