Start with high-confidence christian music books, then narrow by subgenre or adjacent topics.
Holy Roar Bible Study Guide
Chris Tomlin, Darren Whitehead
The Praise and Worship Team Instant Tune-up
Douglas Flather, Tami Flather
The Carols of Christmas
Andrew Gant
Top 50 Praise and Worship
Carol Tornquist
This Is Christmas, Song by Song
Annie Zaleski, Darling Clementine
Then Sings My Soul
Robert J. Morgan
Holy Roar
The Origin of Hymns
Be Still, My Soul
Randy Petersen
