1 will be the same note as the name of the key. This means that while '1' is always referred to as Do the pitch of the note depends on the key the song is in. Guzheng music in cypher notation is usually written on a Movable Do scale. The player needs to know the key the music is in to identify which note, which pitch, is represented by which number. Unlike staff notation, an individual number could represent any pitch. Numeric or Cypher notation gets its name from the use of numbers to represent notes.