Prince Harry has a "really nice singing voice"

Conductor Karen Gibson revealed: "Meeting them was lovely. They were like any other couple in love and really tuned into each other. They were lovely to us and just like ordinary people.

"Prince Harry has a really nice singing voice he's got a lovely tone. He loves music."

The choir had to rehearse extensively for their performance at the wedding because the couple - who have 13-month-old son Archie together - requested a shift in tone to the way the group usually sing the song.

Karen explained to Britain's OK! magazine: "It was Harry and Meghan who wanted that song and they wanted it sung in a particular way.

"We usually sing it very lively with whistles and dancing, so the way we did it was a big change.

"We had to increase our rehearsals because Harry and Meghan wanted it very pared down."

Karen also revealed the idea for the group to sing at the wedding didn't come from the couple themselves, but from the groom's father.

She said: "The idea of a gospel choir didn't come from Meghan, apparently it came from Prince Charles, who I've been told loves gospel choirs."

The choir were already familiar to the royal family as they previously performed as part of Queen Elizabeth's Golden Jubilee celebrations.

Karen said: "We performed at the Queen's jubilee in 2002. I was more nervous then! I've met her a couple of times. She's a woman of great wit, I really like her dry sense of humour."