What does a repeat sign indicate in musical notation?

The repeat sign in musical notation indicates that the musician should go back to the beginning of the section demarcated by the repeat signs and play the passage again. This allows for a section of music to be played more than once, which can create structure and enhance the musical composition by reinforcing themes or motifs.

The use of repeat signs is common in various styles of music, promoting a sense of familiarity and building anticipation in the listener. Musicians interpret the repeat sign as a clear instruction to revisit the designated measures, ensuring that the repeated music is performed exactly as originally played, unless otherwise noted by different dynamics or expression markings.