What is Dave Coskunian and Constantine Orbelian's common descent?
Constantine Orbelian: Constantine Garrievich Orbelian, Jr. (Armenian: Կոնստանտին Օրբելյան , Russian: Константин Гарриевич Орбелян , born San Francisco, 27 August 1956) is an American conductor and pianist of Armenian and Russian descent.
i don't know