A week ago, Bon Jovi (June 4), Shakira and Rihanna (both June 5) were the first performers confirmed for this year’s Rock in Rio Madrid. Cyrus was added to the list on Friday, with the news that June 6 will be a family day, with tens of thousands of children expected.

Rock in Rio Madrid will take place over two weekends — June 4-6, and two unconfirmed days of the following weekend — at Rock City, a 200,000-square-metre (50-acre) area in Arganda del Rel, 17 km (10 miles) from Madrid.

As a condition for playing the festival, Cyrus will not perform any other concert in Spain this year. Although she has never performed in Spain, Cyrus has a huge youth following here, and event organiser Roberto Medina announced her performance at a Madrid college in front of cheering and screaming children as well as TV cameras.

Cyrus’ new film, The Last Song, will premiere in Spain in May.

Rock in Rio was founded in Rio de Janeiro in January 1985, and subsequent events in Lisbon and Madrid have been arranged by Brazilian founder Medina. This will be the second Rock in Rio Madrid. The first, in 2008, was attended by 290,000 fans.