His style is contemporary and he is well known for composing and conducting classical, instrumental, adult contemporary/new age, film soundtrack as well as pop music.

[2] By 1975, he was studying Composition and Orchestra Conducting at the University of Music and Performing Arts Vienna.

From 1987 until 1991, Rohani served as the music director and conductor of the Committee on the Arts (COTA) symphony orchestra in Los Angeles.

[5] Yanni Live at the Acropolis was acclaimed by both critics and audiences and became the most widely viewed program ever shown on Public Television in the United States and is the second best-selling music video of all time.

[5] Rohani was commissioned in 1998 by the government of Thailand and the committee of the 13th Asian Games to compose and conduct the music for opening ceremonies.