Explanation:
1. In music notation, dal segno often abbreviated as D.S., is used as a navigation marker. From Italian for "from the sign", D.S. appears in sheet music and instructs a musician to repeat a passage starting from the sign shown at right, sometimes called the segno in English.
2. Da Capo al Segno (often abbreviated as D.C. al Segno): It means "From the beginning to the sign ()".
3. al fine means to start back at the segno mark and continue playing until you reach the final barline, or a double-barline marked with the word fine. This command stands for dal segno al fine, and literally means "[play] from the sign to the end." (See the segno sign in the picture.) Similar commands include: D.S.
4. musical repeat
: a notational sign specifically : the sign that marks the beginning or end of a musical repeat.
