Songs that explain the Sacraments—what they are, why they matter, and how the Bible & early Church talk about them.
Catch-all tracks about the Catholic Church: Read Your Catechism, We Stand for the Gospel, Science Isn't the Church's Enemy, Constantine Didn't Start My Church, and other "how it all fits" songs.
Tracks on moral theology and the spiritual life: conscience, virtue, vice, temptation, venial vs mortal sin, and why "freedom" isn't the same thing as "whatever I want."
Tracks on Mary, the communion of saints, and the "afterlife questions" that always come up: Heaven, Hell, Purgatory, intercession, and why Catholics talk the way we do about all of it.
The complete Peter's Barque catalog in one place — newest drops, older tracks, and everything in between.