MADERA - The Madera Couth Choir performed this morning at Valley Children's Hospital for the patients, families and staff. The half hour performance was a warm up for their concert next week at Disneyland's California Adventure. The group will take a stage at the park's Hollywood Backlot and perform 50's favorites for the guest of the park. After their performance the students will go into a recording studio at the park and learn the process of recording a soundtrack.