He is the founder, principal songwriter, and lead singer of the hard rock/heavy metal band Animal Drive, which was formed in 2012 and disbanded in 2021.

[4][7] Jelusick had grown up listening to King's X, Slash, Whitesnake, Dream Theater, and Toto, among others, and he decided to change his musical direction to hard rock and metal.

[4] Between 2012 and 2013, Jelusick was hired to take part in an international project in South Africa called Synkropation,[5] which consisted of an album featuring the collaboration of different artists, including Mandoza and Dilana.

[25][26][27][28] Reportedly, his live performance of Queen's "The Show Must Go On" was noticed by American rock band Trans-Siberian Orchestra (TSO), who were searching for two male touring vocalists.

After auditioning and meeting with producer Paul O'Neill, Jelusick was chosen to join the group and took part in their 2016 tour.

[4][5] During the 2017 tour, the band, with Kayla Reeves on the East and Jelusick on the West lineup, honored O'Neill, who had died in April, with the song "The Safest Way into Tomorrow".

[4][32][33] During this time, Jelusick was also a member of the Croatian metal band the Ralph, with whom he released the album Enter Escape in February 2017.

[34][35] In May 2019, Lords of Black's Tony Hernando released a self-titled album with his solo project Restless Spirits.

The record also included guest artists Deen Castronovo, Johnny Gioeli, and Alessandro Del Vecchio.

[36] In late 2018, Jelusick recorded vocals and keyboards for a George Lynch project titled Dirty Shirley, which also featured Will Hunt on drums and Trevor Roxx on bass.

[39][40] In July 2021, Jelusick joined the British hard rock band Whitesnake as a backing vocalist and keyboardist.

[42] In December 2023, keyboardist Derek Sherinian and guitarist Ron "Bumblefoot" Thal unveiled a new progressive metal project named Whom Gods Destroy, recruiting Jelusick for vocal duties, along with Yas Nomura on bass and Bruno Valverde on drums.

[44] In 2018 and 2019, Jelusick performed in several episodes of Hrvatska Radiotelevizija's entertainment and music program A-strana[45] and was the youngest mentor in the Croatian version of the BBC show Just the Two of Us.