When the composer wants a section to be played twice,he does not have to write it two times,instead,he can use a special sign: two bar lines and two dots called a Repeat Sign. When Repeat Sign appears at the end of a section and there is no other repeat sign before it,the composer means that repetitiuon is to start from the beginning of the music. When a certain section is to be repeated the Repeat Sign must also appear in the beginning of the music of the music to be repeated,with the two dots on the right side of the two bar lines,as well as at the end of the music tp be repeated with the two dots on the left side of the two bar lines.
