Since 2001, ABC Classic FM has organised a number of Classic 100 Countdown surveys.[1] The results of each survey are decided by votes cast by the listeners of ABC Classic FM. Several months after the voting, the works are played in reverse order of popularity, over an intense seven to ten days of marathon programming. The countdown culminates in the broadcast of a live concert featuring the most popular pieces and finishing with the number one listener choice. A feature of the countdown is that the top 100 pieces are kept secret until announced (including the final concert). The Classic 100 have formed the basis of the live concert programs of at least one Australian orchestra,[2] and have been influential in demonstrating the public's choice of a contemporary Australian orchestral composition.[3]