At age 15, he wrote Toccata for piano and won the student competition, after which he enrolled in composition classes at the Conservatory Giuseppe Verdi in Milan, with professor Niccolò Castiglioni.
Art means to influence".Hristić belongs to a generation of composers who entered into Serbian musical constellation in the early 1970s.
Hristić met with the European avant-garde in the late fifties, when his composition professor in Milan, Castiglioni acquainted him with contemporary Italian music and Schoenberg dodecaphony.
His art has developed into a line that runs from the lower chamber of interest to the broad forms of intervention in the field of theatre, vocal and instrumental music.
First music for the theater he wrote in 1958 for performances in Red and Blue in rainbow and Little box that plays for Youth Theatre in Belgrade.