The staff is made up of five lines, counting from the bottom up one, two, three, four, five, and then 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, first line mi, first line fa, second line o, second line la, third line i, third line do, if not enough, you can continue to...