Pupils from Maria Fidelis Convent School are preparing for the biggest night of their lives.
Tonight they'll be performing in one of the most famous venues in the world - the Royal Albert Hall.
They are among the 41 acts taking part in the Music For Youth School Prom. During the next three nights, 3,000 young musicians will take to the stage.
The Music For Youth charity receives no government funding but the Royal Albert Hall sponsors the event to provide opportunities and access for young people in the arts.
The Music For Youth School Prom continues until Wednesday and tickets are still available.