. >> reporter: it's an opportunity granted by god, choir director karen gibson says, not to mention princeo were you singing for that day? >> we were singing for the couple, definitely, because it's their wedding, their very private, personal, intimate ceremony on the world stage. ♪ stand by me >> reporter: because something in their voices, that sound, that song, struck a chord that day. it resonated far beyond the castle walls. ♪ stand by me stand by me >> reporter: charlie d'agata, cbs news, london. >> glor: still really cool to see. good for the choir. that is the cbs evening news for tonight. i'm jeff glor. we will-- more music, we like it. we'll see you tomorrow, good night. ♪ stand by me captioning sponsored by cbs captioned by media access group at wgbh access.wgbh.org the trump administration is >>> original reporting, anytime, anywhere. ♪ >>> new at 6, the trump administration is targeting auto pollution standards with a new argument -- fuel-efficient cars can be dangerous for drivers. good evening, in a draft regulation obtained by the associated press, the fed cites safety to j