BREMEN, Ga. (AP) — A Christian hymnal called “The Sacred Harp” is at the heart of a more than 180-year-old American singing tradition that is as much about the community as it is the music. Initially published in 1844, a new edition of the songbook — the first in 34 years — is being released later this year by the Sacred Harp Publishing Company. The refresh is meant to breathe new life into the hymnal while preserving its history and role in the a cappella group practice known as Sacred Harp singing.