1 The par of a course is the total number of strokes that a course designer assumes it will take a skilled golfer to finish a round, or 18 holes. 2  The par is usually around 70, or three to five strokes per hole. 3  The course rating and course slope are assigned by the United States Golf Association (USGA).
A Clef (from the French for key) is a musical symbol used to indicate the pitch of written notes. Placed on one of the lines at the beginning of the staff, it indicates the name and pitch of the notes on that line.
Key signatures can provide a clue as to what key a piece of music is written in. Key signatures tell you what sharps or flats will appear in a song. Key signatures appear directly after the clef signs. The number of sharps or flats in the key signature can give you a clue as to what key a song is in.