The staff consists of five lines, counting from the bottom up one, two, three, four, five, and this is the treble clef. The bass clef also has five lines like this, also counting from the bottom up. From the five-line treble chart, there is a bar under it, which is called a line under it, going up, the first one is called c1, and the roll name is do. Add a re to the bottom, mi to the first line, fa to the second line, so to the second line, la to the third line, si to the third line, do to the third line. For bass charts, there are other charts, fa with a line of mi, and so on for the rest.