James Mates will lead live commentary of the service from inside St George's Chapel. Kensington Palace revealed a list of performers for the May 19 ceremony, including a 19-year-old cello prodigy and St. George's Chapel's choir - which was founded in 1348!
The British cellist, who made headlines after winning the BBC Young Musician award in 2016, performed at a Halo Foundation event attended by Harry last June and does charity work aimed at making classical music more accessible to young people of all ethnicities and classes.
Prince Harry and Meghan Markle's wedding music has been announced. He said he "bowled over" when he got the call and said yes immediately.
Mr Kanneh-Mason tweeted in response saying he was "excited and honoured" to perform at the wedding.
Another choral group, Karen Gibson and the Kingdom Choir, are also featured on the lineup.
Kanneh-Mason was floored by the request and said yes posthaste: "I was bowled over when Ms. Markle called me to ask if I could play during the ceremony, and of course I immediately said yes".
"I can't believe I've been chosen to go and I can't wait to see Meghan in her wedding dress and spot the other members of the royal family". "It will be a moment that we will always treasure", she said. The orchestra, conducted by Christopher Warren-Green, will be comprised of musicians from the BBC National Orchestra of Wales, the English Chamber Orchestra and the Philharmonia.
With just over a month to go until the big day, there's plenty of wedding prep for the royal couple, from finalising the seating arrangements and OK-ing the flowers to selecting the official bridal party, with Prince Harry supposedly only recently making Prince William his best man and selecting the wedding photographer.