letters vs numbers on keyboard
Numbered Notes uses numbers 1-12 for each halfstep in an octave. Notes are placed into a 12 note staff. Each octave range is given a number, the middle octave range is “octave 4″. Using numbers 1-12 also allows a much easier way to see the intervals between two notes. This actually helps beginners understand and use theory much faster then they would trying to use traditional notation.