Loris Haykasi Tjeknavorian is an Iranian Armenian composer and conductor. He has appeared internationally as a conductor, serving as the principal conductor of the Armenian Philharmonic Orchestra from 1989 to 1998 and later from 1999 to 2000. As a composer Tjeknavorian has written 6 operas, 5 symphonies, choral works, chamber music, ballet music, piano and vocal works, concerti for piano, violin, guitar, cello and pipa, as well as music for documentary and feature films. Among his best known works are the opera Rostam and Sohrab, based on the story of Rostam and Sohrab from Ferdowsi's Shahnameh, and the ballet Simorgh.

The tragedy of Rostam and Sohrab forms part of the 10th-century Persian epic Shahnameh by the Persian poet Ferdowsi. It tells the tragic story of the heroes Rostam and his son, Sohrab.