the highlights from the couple's beautiful big day. ♪ when the night has come ♪ and the land is dark >> reporter: the gospel soul classic "stand by me" from 1961. we assume the song means a lot to the couple and we also assume it's never been sung at a british royal wedding before. ♪ i won't be afraid >> reporter: the choir stood at the back of st. george's chapel windsor and simply sang for harry and meghan. ♪ stand by me >> reporter: there was a palpable sense of departure here. on one side of the chapel, a certain royal stiffness perhaps. in contrast, a warmth and vivid emotion on the other han markle like she may help change things.