DULUTH — Once a month, typically on a Sunday afternoon, the Friends Meeting House is filled with voices singing together. It's not a performance because everyone present is involved in the singing.

Dec. 24—As haunting harmonies drifted through the rafters of the third-floor attic chapel, echoes of the past rose and fell with the voices signing from the pages of an 1873 shape-note hymnal. The ...

Groups of Sacred Harp singers are working together to revise their hymnal The a capella tradition uses shape-note music to sight-read songs from the hymnal's 554 options Families pass the musical ...