Justin began composing at the age of 11. He is self-taught, and his continued passion for making music fueled his rise in composition. He has written various solo, chamber, and large ensemble works. Most of Justin's music is characteristically Neo-Romantic; he particularly has an affection for the music of Dmitri Shostakovich, Pyotr Ilyich Tchaikovsky, Gustav Mahler, and Richard Strauss.

In March of 2023, Justin won Special Prize in the 2nd ISAC International Popular Music Composition Competition for his piece, "Bumbling Naivety". In June of the same year, he performed in the premiere of his piece, "Fanfare for the Winners," specially commissioned for the YYPA 2023 weekend. Justin was also selected by the Pacific Chamber Orchestra for their Dream American 2023 workshop and performance of his piece, "This Road Alone," in October of the same year. His work, “Grand Beach,” won in a call for scores by the Untitled Ensemble for the Land of the Lakes Showcase. In addition, his work, “Clandestinity,” won in a call for scores by the Fivemind Reed Quintet. A world premiere of Justin's piece "Beneath the Crypt" is forthcoming with the prestigious Frost Wind Ensemble in the fall of 2024. Justin is also an avid arranger with an upcoming album release with tuba virtuoso and his teacher, Dr. Aaron Tindall. The album "At the Ballet" will feature two of Justin's arrangements, including Prokofiev's "Cinderella" and Tchaikovsky's "Swan Lake." He is also arranging for the prestigious STAMPS Brass Quintet at the University of Miami for a collaborative performance with ballet dancers, including selections from a broad spectrum of the repertoire.

Justin enjoys hiking and exploring his new city, Winnipeg. He has a passion for fitness and healthy living. Over the past few years, Justin embarked on a weight-loss journey, losing 170 lbs. With his newfound zest for life, he makes beautiful music in as many ways as possible. An article in the Winnipeg Jewish Post detailed much of his life experience up to his move. In addition to Justin's music-making, he has an extensive background in marketing, social media, and entrepreneurship. In 2015, still in high school, he started his own marketing company "Gruber Marketing." He designed websites for clients ranging from law firms and tax consultants to family farms, stables, and construction agencies. He recently has taken a step back from his company as he has had other special interests that have taken more precedence. He has a keen eye for what sells on a visual medium and is apt to engage with audiences through his personal experience.

To purchase Justin’s works, please visit his store.