A soaring video version of “Bridge Over Troubled Water” combines the voices of more than 500 Henrico County Public Schools students in an ambitious artistic response to racial strife and national division. The video creates a seamless rendition of the Simon and Garfunkel classic made from hundreds of individual home recordings from choral students who attend each of the school division’s nine high schools. In an introduction to the video, Lauren Relaford, a Glen Allen High School senior who will attend Duke University in the fall, explains the project’s aim of providing a measure of “refuge, connection and peace.” The...