The term 'Treble Symbol on Music' is referring to the CLEF, which is a four-letter symbol used in musical notation. The CLEF is used to indicate the pitch of written notes and is placed at the beginning of a staff. It is also used to identify the pitch of notes on different lines and spaces of the staff. The most common CLEF is the treble CLEF, which is also known as the G CLEF because it wraps around the G line on the staff. This CLEF is used for higher pitched instruments such as the violin, flute, and oboe.