The stage adaptation of the Emmy Award-winning “High School Musical,” the movie that smashed all records on the Disney Channel, has arrived in Washington for two weeks, followed by two more in Baltimore.

Musical director Robert Sprayberry gets a kick out of conducting the orchestra and vibrant cast of Broadway veterans. He cautions that most adults attending will know few details about the plot or the teenage characters, but their youngsters will have memorized every line and lyric sung by their idols.