Extra notes can be added above or below the staff using short lines, called ledger lines.
Bar lines are drawn across the staff, dividing the music into sections called Bars or Measures. A double bar line signifies the end of an important section of music, while a final bar line is written at the end of a piece.
This is a quarter note. It lasts for one beat or count.
These two numbers are called the four four time signature.
They are placed after the treble clef.
The * time signature tells you there are four beats in each bar.
There are four quarter notes in one bar of music in * time.