Three-year-old fingers wrapped around a violin bow in a city about to be swallowed by war. The image sounds almost mythic — except it isn't. Tomo Milicevic was born in Sarajevo on September 3, 1979, and by age three he was already learning the violin. His parents, Tonka and Damir, packed up their lives and moved to Troy, Michigan when he was still a child. The Balkan conflict that would later tear the region apart became a distant echo, but Milicevic never forgot the parallel timeline. He once stated that if his family had stayed in Yugoslavia, he would have been drafted at 16 and on the front line at 17.
In suburban Michigan, the violin remained a constant for sixteen years — all the way until he turned 19. But alongside those classical drills, something heavier was taking root. By the early 1980s, Milicevic surfaced as an active figure in Troy's local heavy metal scene. He built his first guitar with his father, taught himself to write music at 17, and spent his teens absorbing the riffs of Metallica, Slayer, Deep Purple, and Alice in Chains. The instrument that started as a father-son carpentry project became an obsession. Nirvana and Led Zeppelin rounded out a set of influences that pulled him steadily away from the concert hall toward distorted amplifiers and dive bars.
He co-founded the band Morphic and spent several years grinding through the Michigan circuit as a professional guitarist. The leap came in 2003, when he joined Thirty Seconds to Mars as lead guitarist. That single move transformed a local metal kid into a global touring musician within two years. The group was signed to Immortal Records and operated in the alternative rock lane, but Milicevic's playing carried traces of every genre he'd metabolized since childhood — metal aggression, grunge texture, classic rock swagger.
How A Beautiful Lie changed everything
The album A Beautiful Lie landed in 2005 and altered the band's trajectory overnight. Milicevic's guitar work on that record became the sonic signature that earned Thirty Seconds to Mars international recognition. Airwaves and festival stages opened up across continents. Audiences who had never heard of Morphic or the Troy metal clubs now screamed his riffs back at him. By the end of the decade, the follow-up This Is War arrived in 2009 and cemented the momentum with critical acclaim and commercial success that pushed the band deeper into arena-headliner territory.
He stayed with Thirty Seconds to Mars for fifteen years — the entire run of their defining albums. Through A Beautiful Lie, This Is War, and 2013's Love, Lust, Faith and Dreams, Milicevic remained the lead guitarist shaping the band's evolving sound. He layered guitar effects obsessively, pulling textures from multiple genres into what he straightforwardly called rock music. But his role wasn't limited to the fretboard. The same hands that once held a violin bow were writing songs, playing bass, and stepping into production duties. He was a multi-instrumentalist in the truest sense — violin, piano, guitar all in the toolkit.
Collaborations outside the band
Outside the Thirty Seconds to Mars universe, Milicevic's fingerprints landed on a series of collaborations that revealed a broader musical appetite. He recorded with the Los Angeles band Dommin and worked alongside singer Ivy Levan on multiple releases, including the 2013 project Introducing the Dame and the 2015 release No Good. These ventures placed him in pop-adjacent territory far from the metal clubs of his youth, but the through line was always texture and tone — a guitarist's ear applied wherever the music led.
The personal timeline behind the public career has its own peculiar geography. At 18, just as he was beginning to write seriously, his parents opened a restaurant in Los Angeles. That westward pull would later put him in the orbit of the music industry he eventually entered. He married Vicki Bosanko and now lives in Detroit, circling back to Michigan. His sister, Ivana Milicevic, built a career as a model — a different kind of stage, but the family restlessness seemed genetic.
Milicevic exited Thirty Seconds to Mars in 2018 after a decade and a half that had carried him from club shows to headline slots across the planet. His departure closed the chapter on the lineup that recorded the band's most commercially potent work. By then, the violinist-turned-metal-devotee had already spent years as an American musician and producer who defied easy categorization. Croatian by blood, Bosnian by birth, Midwestern by upbringing, he never fit neatly into one scene.
Eight years after leaving the band, Milicevic turns 47 in 2026. The arc from that first handmade guitar in Troy to the Immortal Records catalog is complete enough to survey, but the silence since 2018 leaves a question hanging. A man who started composing at 17, who described his own music with the simplicity of just calling it rock, has been publicly quiet as a recording artist. The studio habits, the effect experiments, the multi-instrumental fluency — none of that disappears. The question isn't whether he still plays. It's whether we'll hear it.