He is the only remaining member of the original line-up of the band which he formed in 1981 with a friend, Dominique Nicolas, soon to be joined by his twin brother Stéphane and Dimitri Bodianski.

[4] In 1992, Nicola Sirkis released a solo-album, Dans la Lune, covering a few of his favourite songs, in French or English.

[6] In 2023, Sirkis was a guest celebrity judge in the episode of the Season 2 titled A Lé-Gen-Daire Return of the French language reality television series Drag Race France broadcast on France.tv Slash.

Stéphane joined Indochine in 1982, playing synthesizers and guitar, and remained with the band until his death from hepatitis C after years of struggling with drug addiction.

Their elder brother wrote Starmustang, published in 2009, recounting his point of view and blaming Nicola for Stéphane's death.