Higher and Lower Notes
Although there are only seven letters in the musical alphabet (A B C D E F and G), these notes can be repeated many times at various higher and lower pitches. So really, the musical alphabet goes A B C D E F G A B C D E F G A B C D E F G etc, with the notes getting higher all the time.
Ledger Lines
Sometimes notes sound higher or lower than the ones written on the treble or bass staves. To write these higher or lower notes, short lines called ledger lines are used.
When using ledger lines, the note names go up or down one letter at a time the same as notes on the staff. For example, the note on the top line of the treble staff is F, the note above that is G, and the note on the first ledger line above that is A. If you then had another note above the ledger line, it would be B.
Here are some notes using ledger lines.
