What is the Disney Channel's popular musical from 2006 called?

Explanation

'High School Musical' is a popular American youth film from 2006, made by the Disney Channel. The film tells the story of Troy Bolton, the basketball captain, and Gabriella Montez, who is madly in love with him. Gabriella and Troy get the lead parts in their school's musical. The first film was followed by 'High School Musical 2' (2007) and 'High School Musical 3: Senior Year' (2008).