SHARPS AND FLATS
The pitch of a note is how high or low it sounds. Pitch depends on the frequency of the sound wave. The higher the frequency of a sound wave, the higher its pitch sounds.
But musicians usually don't want to talk about sound waves and frequencies. Instead, they just give the different pitches different letter names:
A, B, C, D, E, F, and G.
These seven letters name all the natural notes on a keyboard, that's all the white keys, within one octave. When you get to the eighth natural note, or the note following G, you start the next octave on another A.
But in music there are twelve notes in each octave that are in common use. How do you name the other five notes on a keyboard - the black keys?
The pitch of a note is how high or low it sounds. Pitch depends on the frequency of the sound wave. The higher the frequency of a sound wave, the higher its pitch sounds.
But musicians usually don't want to talk about sound waves and frequencies. Instead, they just give the different pitches different letter names:
A, B, C, D, E, F, and G.
These seven letters name all the natural notes on a keyboard, that's all the white keys, within one octave. When you get to the eighth natural note, or the note following G, you start the next octave on another A.
But in music there are twelve notes in each octave that are in common use. How do you name the other five notes on a keyboard - the black keys?
Sharp, flat, and natural signs can appear either in the key signature, or right in front of the note that they change.
A sharp sign means "the note that is one half step higher than the natural note".
A flat sign means "the note that is one half step lower than the natural note".
Some of the natural notes are only one half step apart, but most of them are a whole step apart.
When they are a whole step apart, the note in between them can only be named using a flat or a sharp.
Notice that, using flats and sharps, any pitch can be given more than one note name. For example, the G sharp and the A flat are played on the same key on the keyboard; they sound the same.
You can also name and write the F natural as "E sharp"; F natural is the note that is a half step higher than E natural, which is the definition of E sharp. Notes that have different names but sound the same are called enharmonic notes.
You can also name and write the F natural as "E sharp"; F natural is the note that is a half step higher than E natural, which is the definition of E sharp. Notes that have different names but sound the same are called enharmonic notes.
G sharp and A flat sound the same. E sharp and F natural sound the same.
Sharp and flat signs can be used in two ways: they can be part of a key signature, or they can mark accidentals. For example, if most of the C's in a piece of music are going to be sharp, then a sharp sign is put in the "C" space at the beginning of the staff, in the key signature. If only a few of the C's are going to be sharp, then those C's are marked individually with a sharp sign right in front of them. Pitches that are not in the key signature are called accidentals.
When a sharp sign appears in the C space in the key signature, all C's are sharp unless marked as accidentals.