 He studied composition with Thomas Christian David, Alfred Uhl, and Hans Jelineck, Friedrich Cerha As a first year student at the Academy, Pejman's compositions were performed by the Vienna Chamber Orchestra and his orchestral work "Rhapsody" was performed by the Vienna Radio Symphony Orchestra.In his third year as a student, he was commissioned to write the first Persian Opera "Rustic Festival" for the opening of the Tehran Opera house, Rudaki Hall.Upon graduation from the Academy of Music in Vienna, Pejman returned to Iran in 1968, where he was commissioned to write the opera Hero of Sahand (Delāvar-e-Sahand) which was based on legendary Persian hero Babak Khorramdin.