Self-described as "an electro-metal breakdown", it was written by Robinson, Olivia Cassy Brooking, Sam Matlock, and Tylr Rydr.

"Doomsday Blue" drew commercial success, becoming Robinson's first charting song in their home country.

"Doomsday Blue" was composed by Bambie Ray Robinson, Olivia Cassy "Cassyette" Brooking (who also provided uncredited backing vocals), Sam Matlock, and Tylr Rydr.

[2] The BBC's Mark Savage described the song to be "about having [one's] potential overlooked, and the marginalisation of the queer community".

[‡ 1][4] According to Robinson, they initially applied for Eurosong 2024 to "curse out" memories of being raped in May 2023 by an unnamed acquaintance, around three weeks before they were set to make their debut festival performance.

[5] When applying for Eurosong, they decided that out of the songs they had considered, "Doomsday Blue" worked best for Eurovision and the Irish audience.

[6] An accompanying music video was released on 8 March 2024, and was produced by Dublin-based production company CAMP.

According to Robinson, they initially intended for the video to be "very dark" but relented after hearing that children liked their song, instead making it "a little more cutesy, spooky and comedic".

[7] The music video features a young witch writing in a "blaze bible" to cast a boyfriend, later transferring into a "candy-coloured dream world" that Robinson claims was inspired by the colours of the transgender flag.

[13] Multiple beat reporters have also praised the song; Rita Dabrowicz, a writer for the indie music review site Vanadian Avenue, praised the song, stating beliefs that "[Robinson] will bring a hell of a spectacle with them that surely will be remembered for a long time.

"[14] Ed Power, writer for The Irish Times, praised the song as a "sugar-and-spice mix of pop and industrial metal [that] will undoubtedly land with a splash in Malmö.

"[18] Two days later, Father Declan McInerney, an Irish Catholic priest, also heavily criticised the song and Robinson, stating in a sermon that "the poor devil can neither sing nor dance", while also claiming that Robinson was trying to push "certain orientations" on the Irish public and declaring that "[Ireland] is finished as a country".

However, he also criticised the Catholic Church, stating that "Christians need to acknowledge that this movement has been spurred on by the serious past failings of Christendom...

[26] "Doomsday Blue" was announced to compete in Eurosong 2024 and premiered on 11 January 2024 on an episode of The Ray D'Arcy Show broadcast on RTÉ Radio 1.

During the allocation draw on 30 January 2024, Ireland was drawn to compete in the first semi-final, performing in the first half of the show.

[47] After the contest, Robinson expressed frustrations with the EBU, stating that they were still "waiting for an official update" regarding the line makeup they were forced to remove.