Singer Beyonce and US rap star Jay-Z are among those performing at the Prince's Trust Urban Music Festival in London this weekend.
Prince Charles met rap star Jay-Z during rehearsals on Friday
A number of British acts, including Jamelia, Dizzee Rascal and The Streets are also taking part in the event, in aid of the young person's charity.
Around 40,000 people are expected to attend the festival, at Earl's Court.
Prince Charles met Jay-Z and others involved in the event, during rehearsals on Friday.
The rapper described the Prince as "cool, very cool," and praised his work helping disadvantaged young people.
The Prince admitted he was not too familiar with the urban scene but he "liked some of the music", and said: "I'm getting past my sell-by date."
Other artists taking part in the two-day event include Alicia Keys, Amy Winehouse, Big Brovaz and Lemar.
The event will also see MCs battle it out to be crowned Prince's Trust Urban champions.
Audience members will also have a chance to participate in breakdance contests and take lessons in graffiti writing, as well as attending workshops on DJing, MCing and the music industry.
Beyonce is among other artists performing at the event
A spokeswoman for The Prince's Trust said: "This festival will showcase the very best of urban music and culture."
"There is currently nothing like this on the music calendar, and the marketplace is clamouring for a large-scale, credible urban event to celebrate the steady rise of this music genre."
The Prince's Trust was founded by Prince Charles in 1976 with the aim of helping young people fulfil their potential.
The charity also stages the annual Party In The Park pop concert and held last year's Fashion Rocks event at the Royal Albert Hall.