Playing a Song at a Wedding

Answer to a question from Quora.com:  What song should I play at my younger sister's wedding?

Depends on when you want to play it. If during the ceremony, talk to the officiant. 1. Processional (wedding party entrance) 2. Bride’s entrance 3. During the Introduction. 4. Before the Vows 5. After the Vows 6. Recessional (everyone leaves)
Very Important: talk to the couple. They might feel very uncomfortable standing in front of the guests with nothing to do but wait for a song to be over during the ceremony.
Be gracious and humble. Maybe they don’t want your song during the ceremony. Perhaps during the reception would be better.
They might not want your song. Have this conversation as soon as possible. Best to get it out in the open so you and they can process emotions.
The song you choose should fit the moment. Love? Hope? Marriage?
Practice a lot. If working with musicians you’ve not met until the wedding day, talk to them as soon as possible. Arrive early to rehearse.
We hope your song will add to the magic of the moment. It’s about their joy, not your performance.