The festival features over 18 concerts including major choral and orchestral works , chamber ensembles , free lunchtime concerts and late night recitals in churches , chapels and in the open Openness air .

Between 1953 and 1971 , except in 1956 , each song was sung Perception_active twice by two different artists , each one using Using an individual orchestral arrangement , to illustrate Statement the meaning of the festival as a composers ' competition , not a singers ' competition .