1. MUSIC THEORY ONLINE
Music theory online is an attempt to help people learning music to understanding how it is written down, what the various signs and symbols denote, and what the common technical words used by musicians mean.

2. Music Theory I Pitch Musical Alphabet Music Staff Whole and Half Steps
Accidentals
Treble Clef
Bass Clef
Time value
Scale

3. What Is Pitch?
Pitch is the musician's term for the frequency of a note. Pitch refers to how high or low a note sounds. High pitches are on the right side of the piano keyboard and low pitches are on the left side of the piano keyboard. Pitch ranges are often referred to in terms of the human singing voice.
Soprano - a high woman's voice Alto - a low woman's voice Tenor - a high man's voice Bass - a low man's voice
The accepted pitch standard is A-440, i.e., the note A above middle C has a frequency of 440 cycles per second.

4. Musical Alphabet
The musical alphabet consists of the letters A, B, C, D, E, F, and G. These letters represent musical pitches and correspond to the white keys on the piano. As you move forward through the musical alphabet the pitch of each note gets higher. The musical alphabet is repeated a little over seven times on the 88 keys of the piano keyboard

5. Music Staff
The music staff consists of five lines and four spaces. Each letter of the musical alphabet A to G corresponds to a specific line or space. The plural of staff is staves. Staves are often connected by a brace or bracket and barlines.

6. Whole and Half Steps
The half step is the smallest unit of pitch used in Western music. On the piano, a half step is the musical interval from any one key to its closest neighbor, either black or white. Half steps occur naturally between the two white key pairs E-F and B-C. Two consecutive half steps are called a whole step.

7. Accidentals are symbols that alter the pitch of a note.
Accidentals are placed immediately to the left of the note they affect.

8. Treble Clef
The treble clef is also called the G clef because the clef symbol curls around the line that represents the G above middle C.
The names of the treble clef lines can be remembered by the saying "Every Good Boy Does Fine." The spaces spell "F A C E."

9. Bass Clef
The bass clef is also called the F clef because the clef symbol locates the line that represents the F below middle C.
The names of the bass clef lines can be remembered by the saying "Good Boys Don't Fight At all." The spaces by "All Cows Eat Grass" or "All Cars Eat Gas."

10. Time value Summery
You will need to know what I will call 'THE RATE OF VALUE EXCHANGE'. The rate of value exchange is the relationship between the value of a given note to all other notes values in the chart above.

11. What Is A Scale?
A scale consists of a series of pitches arranged in ascending order, spanning an octave.
The most commonly used scales are major and minor. Many other types of scales are used including Modes and Jazz Scales.

12. THE END
Music Theory I