The term 'Repeat Sign of Music' is a musical notation that is represented by the word 'Segno' (5 letters). It is a sign that indicates to the musician to repeat a certain section of music. This sign is usually placed at the beginning of the section that needs to be repeated, and then another sign, called the 'Coda Sign', is placed at the end of the section. The musician will then repeat the section until they reach the Coda Sign.