Bishop Samuel David (1912-1958) chanting Protopsalt Mitri El Murr’s Doxology – Hijaz Kar. He was a student of El Murr who recorded a number of chants accompanied by Qanoun which is out of the norm for Byzantine chant.
Patriarchal records from 1952/3 show that El Murr complained to Patriarch of Antioch Alixandros about Samuel David stealing his compositions. On the other hand, the special style of Samuel David, his ornamentation, and Qanoun accompaniment can be considered his own arrangement of these chants.
— Jack Rabah