Formerly frontman of alternative rock bands Your Vegas and The Chevin he released his debut solo album, Love Kills, in 2018.

[4] Girelli, along with Mat Steel, Jon Langford, Mal Taylor and Mark Heaton, formed alternative rock band Your Vegas in 2005 while studying at Leeds University.

Steven Spielberg's Discovery Channel documentary Rising: Rebuilding Ground Zero to commemorate the 10th anniversary of the 11 September terrorist attack in New York used "Salvador" written by Girelli as its theme music.

Girelli made several network television appearances with The Chevin including on the Late Show with David Letterman[16] and on Conan.

Girelli writes songs and produces for many other major label recording artists and his releases include BTS, Macklemore, Westlife,[17] Daisy the Great, Robin Schulz, Echosmith, Sister Sparrow & The Dirty Birds, Spencer Ludwig, Alex Winston, The Movielife, Story Untold, Peking Duk, Rozes, Sam Feldt, Asher Roth,[18] and Arty.

He appeared on stage with Peking Duk as a guest vocalist several times including performances at Lollapalooza and Electric Zoo and their 2018 US and European tours.

"[27] The show opened off-Broadway with performances at Art X in lower Manhattan, New York in November 2024 with more dates added for the end of 2024 and into 2025.

[34] with Girelli's vocal performance frequently compared to Roy Orbison and Elvis Presley[35] The song "In Your Arms", from Love Kills was used in season 2, episode 2 of Netflix TV show StartUp.

[38] "Naked Soul" from Love Kills was used in MTV show Catfish: The TV Show Season 8, Episode 33[39] Girelli recorded a version of "Bitter Sweet Symphony" for Sacha Gervasi's Emmy Award nominated HBO film, My Dinner with Hervé, released in October 2018.

[41] The album became the basis and inspiration being the theatrical collaboration with Third Rail Projects resulting in the creation of the immersive theater show True Love Forever.

[42] Funland was released to critical acclaim on 25 February 2022, with Rolling Stone Australia calling it "a contender for record of the year.

A lot of artists write lovely albums but this one from start to finish is that of a masterpiece...."[44] Atwood Magazine described its sound as "Soaring and cinematic".

The company has grown rapidly since its formation and has a large roster of artists and writers and an expansive catalog of music across many genres that have generated billions of streams across DSPs.