Ayumi Hirusaki - Music for Ballet Class 4 (CD) This is the fourth CD of lesson music by Ayumi Hirusaki, a pianist who is currently active in company classes and rehearsals for various ballet companies in Tokyo, mainly the New National Theatre Ballet, as well as the Star Dancers Ballet and Architanz. This album features a collection of popular pieces for dancers, selected from ballet classes in Paris, Vienna, and Tokyo that she has played in.