Music producer Naughty Boy said he will be “forever grateful” for the King’s support through the Prince’s Trust, which has given him the confidence to pursue his career.
Charles’ charity awarded the 40-year-old, who has worked with stars such as Beyonce, a grant of £ 5,000 in 2005.
He used it to set up a study in his parents’ garden shed.
Speaking on Good Morning Britain, the DJ, whose real name is Shahid Khan, said he was born on a Watford council estate and grew up thinking no one would “light up” his talent until he received the Scholarship.
He said: “I think, at the time, that when I got the grant from the Prince’s Trust it gave me confidence.
“It made me think, ‘You know what? Is there anyone out there who really thinks I have a chance at this. ‘
“And that someone was our current king, Charles, and I will always be grateful to him for that.”
Khan went on to collaborate with some of the greatest artists in the world, including Ed Sheeran, Emeli Sande and Jennifer Hudson.
He later became ambassador of the British Asian Trust, founded by the king in 2007, and performed for him on several occasions, including at Buckingham Palace.
Khan admitted breaking protocol on a few occasions to hug Charles, but said he considers him a friend.
He said that although he feels it will take a long time for the nation to recover from the queen’s death, he is looking forward to a future with Charles as head of state because he believes he will be a “diversified king”.
“I saw what it was like with the crowd, shaking hands with everyone and being very human,” Khan said.
“The best thing that (has) come out of this is that we have earned a King of the people, especially at a time like this, and a different King as well.
“So I’m looking forward to the future. Obviously, I think it will take a while to recover from the loss of the queen because I was thinking about this year’s Christmas message and it will be strange, as every year of my life I have seen the queen at Christmas, which would convey a beautiful message.
“So it’s a transition, but I think, as a nation, we’ll get there.”