"On Fire" is a song recorded by Belgian singer Loïc Nottet, and released for digital download on 30 November 2018 by Sony Music Entertainment as the second single from his second studio album Sillygomania.

[9][10] Lyrically, "On Fire" reflects four personalities, "the charmer, the child, the clown and the lonely melancholy", as Nottet wanted to personify the moods he was in while composing the song.

[9] During its first verse, Nottet discusses the emotions of a little boy "too different to belong, too lonely to be strong", while in the second one he switches to a little girl "from a broken family with a silent fantasy".

[1] Nouma Foé, an editor of Chérie FM, interpreted the lyrics of "On Fire" differently: "[They] tell the story of a man abandoned by a woman, who decides to dive straight ahead in hell, and ends up losing himself because he lost the love of his life.

[15] PureMédias's Yohann Ruelle likened the urban influences in the song to those presented in "Doctor" (2017),[12] while Julien Goncalves of the same publication noticed similarities between "On Fire" and the music of Australian singer Sia.

[13] Antranig Shokayan, writing for Wiwibloggs, likened the lyrical message of "On Fire" to the themes explored on Nottet's Selfocracy, particularly to "Million Eyes" (2016).

[23] An accompanying music video directed by Skarbek was uploaded onto Nottet's YouTube channel on 7 December 2018,[9][24] and was teased through a series of 87 images on his Instagram, forming a comic based on the clip's plot.

"[3] The visual starts with Nottet and fellow background dancers walking through a hallway filled with balloons, which leads to a room decorated with silver material.

Nottet and his dancers collapse to the ground, but after performing another set of choreography around the faux dragon, the singer reaches for it and puts his right hand over its jaws.

[24] Lola Maroni of Purebreak called the video "hyper artistic" and wrote that it moved away from the reality presented in Nottet's past work to focus more on the fictitious.