WHAT IS PITCH?
Pitch is the quality of
the sound that lets you know how HIGH
or LOW a note sounds
IN PHYSICS it depends on the FRECUENCY of the vibrations.
Low sound: few vibrations 
High sound: a lot of vibrations
Its measure is the HERTZ (Hz): number of vibrations per second
IN
MUSIC WE NEED:
STAVE:
CLEF:
NOTES:
SCALE: 
SHARP, FLAT, NATURAL SIGN:
SHARP, FLAT, NATURAL SIGN: