Stepanyan is a classically trained keyboard player, songwriter, composer, arranger, and producer. He began playing piano when he was 10 years old. He later performed in jazz clubs and wrote songs for Armenian artists. He relocated to Los Angeles to pursue a music career.[7] His single "Motion" won the Hollywood Independent Music Award in the Jazz (Fusion/Bebop) category, and he was nominated for Musician of the Year by the Josie Music Awards.[8][9]
Vahagn released his first album, Moonlight, in 2015, which received favorable reviews.[10][11] His sophomore release, A New Chapter, charted at #5 on Billboard's Contemporary Jazz Charts and at #19 on Billboard's Jazz Charts, and received favorable reviews.[1][2][5] The album features Dave Koz and is co-produced by Stepanyan and Kitt Wakeley.[12]
He composed and arranged the music for the Armenian documentaries The Glance of Ararat and The Faces of War,[13] as well as providing additional engineering and keyboards on Kitt Wakeley's Grammy-winning album, An Adoption Story.[14] He was featured on the single "Gravity" with the Groove Project, which includes musicians Arun Shenoy, Lonnie Park, and Matthew Shell.[15]
Stepanyan performed on the Hope Anthology Project, whose proceeds went to the GMA Foundation's Disaster Assistance Fund, which financially aided musicians, stage hands, and crew who were affected by COVID-19. The project featured Mary J. Blige, Maranda Curtis, Fred Hammond, and Percy Bady.[16] In 2023, Stepanyan performed live at the NAMM Show.[17]