Hanna Petros

He wrote numerous books and treatises on oriental music, Iraqi Maqams and Syriac hymnody.

Hanna Petros was an ethnic Assyrian, born to a Chaldean Catholic family in Mosul in 1896.

Later in 1924 he was asked to compose music for the Iraqi army's marching bands.

He also left many literary works on that field most notably the Principals of Music Theory and The Book of National Anthems.

You can help Wikipedia by expanding it.This article about the Chaldean Catholic Church is a stub.