The Duke of Cambridge and Lady Gaga discussed the importance of ending the stigma around mental health issues in a video released on April 18 saying change can be achieved by people opening up and having conversations about their own mental health.

In the video, Lady Gaga compliments Prince William for his work on the Heads Together campaign. She says, “They told beautiful stories and it reminded me how much my mental heath changing changed my life.”

Prince William in turn compliments Gaga on her own work in the area. “I read your open letter the other day and I thought it was incredibly moving and very brave of you to write down such personal feelings,” he says.