Answer:
look at the picture i sent.
Answer:
below
Explanation:
key signatures are important because they tell how how to play the music. For instance, in the key of C, it has no sharps or flats so you play all white keys. In the key of D, you have two sharps which are C and E. instead of playing the white notes for them you'd play the black.
Number one is number 4 and number two is number 2
