Routley states that metrical psalmody was actually the first English Protestant hymnody. More traditional Church of Christ hymns commonly are in the style of gospel hymnody. The singing or composition of hymns is called hymnody. It included very little New England hymnody or church hymns. Its corpus covers poetry, prose, theology, liturgy, hymnody, history, philosophy, science, medicine and natural history. The hymn has belonged to core Lutheran hymnody without interruption. Despite incorporating non-Christadelphian hymns however, Christadelphian hymnody preserves the essential teachings of the community. African-Americans developed a rich hymnody out of the spirituals sung during times of slavery. Lutheran hymnody is well known for its doctrinal, didactic, and musical richness. Church music flourished and this era is considered as a "golden age" of Lutheran hymnody. Contemporary Catholic music takes many forms, from modern hymnody to inculturated sacred works. The influence of Euro-American hymnody is also evident in the music of many Zambian congregations. This brought about the tradition of Filipino popular hymnody which was later labelled "Jesuit Music". These metres were associated with Christian hymnody. It is the origin of the Christian hymnody, which was entirely developed in Syria.