However, two of them, Aglaurus and Herse, curious to see what was inside, opened it and saw the infant Erichthonius wrapped around a snake. Driven in madness due to the sight, the two sisters along with the third, Pandrosus, fled and fell off the Acropolis to their deaths.
3. Dynamics indicates the loudness or softness of music.
4. A decrescendo is used to indicate that the music should gradually become softer.
12. The dot after a note increases its value by half of its original value
13. Allegro is a commonly used tempo marking, indicating to move at a brisk tempo.
Sorry I don't know all of the answers, hope this helps!