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.
Not all musical instruments play in the same key. That means that when musicians play together, some of the instruments will need to play music that has been transposed to match their key. Many instruments produce pitches in âconcert keyâ which is the standard we use for playing music.