12. Which of the following refers to a set of six books containing progressive technical piano pieces? a. Bolero c. Pelleas et Melisande b. Mikrokosmos d. Sonatine for Piano 13. Who inspired Bela Bartok to write his first nationalistic poem, Kossuth in 1903? a. Francis Poulenc C. Richard Strauss b. Leonard Bernstein d. Sergei Prokofieff 14. It is a musical work that instructs the pianist to merely open the piano lid and remain silent for the length of time indicated by the title. a. (1'33") C. (3'33") b. (2'33") d. (4'33") 15. Triskaidekaphobia is fear of what number? a. 11 c. 13 b. 12 d.14​