Music symbols are used to indicate the pitch, duration, and rhythm of a piece of music. The DOT (3 letters) is a symbol used to indicate a note should be held for half its normal duration. The CLEF (4 letters) is a symbol used to indicate the pitch of the notes on a staff. The BREVE (5 letters) is a symbol used to indicate a note should be held for twice its normal duration. The FLAT (4 letters) is a symbol used to indicate that a note should be lowered by one semitone. The SHARP (5 letters) is a symbol used to indicate that a note should be raised by one semitone. The whole note (9 letters) is a symbol used to indicate a note should be held for four beats. The eighth note (10 letters) is a symbol used to indicate a note should be held for one beat.