As wedding traditions evolve, it becomes increasingly common to walk down the aisle to sappy, chart-toppers by Ed Sheeran or wistful acoustic covers of classic rock hits. But Johann Pachelbel's Canon ...

In a small extra room of their house, Judy and Ralph Sharp stand near microphones with a flute and a 12-string guitar in front of a cell phone to record a hymn almost every day for their "Key of D" ...