Recorded on his iPhone and uploaded to Facebook this morning, it’s described as “a heartfelt song to my homeland … with love”.

It meshes the original lyrics with Minchin’s own words, beginning: “I’ve been to cities that never close down, from New York to Rio and old London town, but no matter how far or how wide I roam, I still call Australia home …ophobic.”

Minchin, who composed the music for the hit musical Matilda, caused controversy last year with the blunt protest song “Come Home (Cardinal Pell)”, which called on Cardinal George Pell to return to Australia to give evidence at the Royal Commission into Institutional Responses to Child Sexual Abuse. It was nominated for the 2017 APRA Song of the Year award.

Minchin’s marriage equality music message, uploaded with the comment “With apologies to that fabulous, much-missed genius, Peter Allen”, is equally stinging and contains a number of expletives.

He refers to Australians being “forced to dance the plebescite jig”, but adds that politicians’ attempt to keep Australia in the past will be a failure.

Within just a couple of hours of being uploaded, the video had been viewed almost 300,000 times, shared almost 18,000 times, and attracted around 2000 comments.

Minchin ends the clip with a direct message: “I think the proposed plebescite on marriage equality is noxious and obnoxious. Polls show that Aussies are overwhelmingly in favour of marriage equality. (Not that it should matter … it’s not fucking X-Factor). But … if the horrid thing goes ahead, let’s drown the MOFOs in “Yes” votes. The condescending shits think that by making it postal, young people won’t vote … prove them wrong.”

Marriage equality advocates are currently mounting a High Court bid to challenge the Government’s plans for a national postal ballot, but Prime Minister Malcolm Turnbull today ruled out any further action on same-sex marriage if the vote does not go ahead.

Warning: video contains language that may offend