movements of the complete ballet the ballet is scored for 3 solo singers ( 1 soprano , 1 tenor , and 1 bass ) , 2 flutes ( 2nd doubling piccolo ) , 2 oboe , 2 bassoon , 2 horns in f , 1 trumpet in c , 1 trombone , a concertino of strings ( 2 violin , 1 viola , 1 cello , 1 contrabass ) , and the ripieno ( 8 violins , 4 violas , 3 celli , and 3 contrabasses ) .