Psalmodist :: Psalmodist (n.) One who sings sacred songs; a psalmist.
Psalmody :: Psalmody (n.) The act, practice, or art of singing psalms or sacred songs; also, psalms collectively, or a collection of psalms..
Psalmographist :: Psalmographist (n.) A writer of psalms, or sacred songs and hymns..
Psalmography :: Psalmography (n.) The act or practice of writing psalms, or sacred songs..