What is another word for ledger line?
Pronunciation: [lˈɛd͡ʒə lˈa͡ɪn] (IPA) 
A ledger line is a shorthand term used in music notation to refer to the lines of music that extend above or below the traditional staff. These lines are used to represent notes that fall outside of the range of the standard five-line staff. Synonyms for ledger lines include "in-between lines," "addition lines," or simply "extra lines." Other terms used to describe the same thing include "supplementary lines," "octave lines," or "extended staff lines." While these synonyms may be used interchangeably, the term "ledger line" is the most commonly used term across the music industry. Regardless of the term used, these lines are essential for representing the full range and depth of any musical composition.
