The 20-second video shows the royal shaking the singer's hand before ushering him inside.
The clip then fades to black with the words "Tomorrow, October 10".
Prince Harry, his wife Meghan and his brother Prince William and his wife Kate have all narrated a mental health advert watched by millions of television viewers earlier this week.
The touching video begins with Prince William saying: "Everyone knows that feeling when life gets on top of us. All over the country, millions of us face challenges to our mental health."
"At all ages, at all intensities and for all sorts of reasons. We feel stressed, low, anxious and have trouble sleeping. Me, you..."
“Your brother, your mother, your friend, your colleague, your neighbour,” Prince Harry continues, "that sufferers often feel they can’t do anything about it.
“There are things we can do,” former Suits actress Meghan continues. “From today, there’s a new way to help turn things around. Every Mind Matters will show you simple ways to look after your mental health.”
“It’ll get you started with a free online plan designed to help you deal with stress, boost your mood, improve your sleep and feel more in control," says Kate, who was the inspiration behind the Royals' brilliant mental health initiative, Heads Together."
"We can all benefit from taking simple steps to improve our mental health," Harry concludes.
