Answer: 1. is a set of five horizontal lines and four spaces that each represent a different musical pitch or in the case of a percussion staff, different percussion instruments. Appropriate music symbols, depending on the intended effect, are placed on the staff according to their corresponding pitch or function. Musical notes are placed by
a notehead is the part of a note, usually elliptical in shape, whose placement on the staff indicates the pitch, to which modifications are made that indicate duration.
The Piano is in the key of C. Why? Because you don't need to play any of the black keys (flats and sharps) in order to play the C major scale. Similar to wind instruments.
The number is 8 keys
Step-by-step explanation: