Octave marker

The clef at beginning of each line is substituted by a number inside a small circle: the octave marker. The octave marker indicates in which octave is
the drawn note. In the next example the note C on each of the seven octaves is represented with the corresponding key in the piano keyboard:

As you can see, the position of C is always the same regardless of the octave.
Though one could use all seven markers for each one of the existing octaves, usually only these two ones are used: and Which correspond to the traditional notation of treble  and bass .

The staff in the Leszer notation has four instead of five lines and its composed of two thick lines and two thin lines. The  thick lines are the F-lines: a note over one thick line is always an F. The thin lines are the C-lines: a note resting over he inferior thin line of a group of two thin lines is always a C.

This is a comparison between the traditional notation (Figure 1) and the leszer notation (Figure 2).

Note how the relative position of the notes does not depend anymore on the clef.

The main two differences to the traditional notation are:

1. Each note keeps its relative position to the thin and thick lines consistent across different octaves.
2. A note corresponding to a white key is black and a note corresponding to a black key is white.

1. The positions of each note

F

A note resting over an F-line is an F:

B

Directly under the two C-lines

D & A

At both sides of the two C-lines

E & G

At both sides of the F-line

 

2. Accidentals and Key Signatures

 
The traditional notation uses a key signature which designates notes which are to be consistently played a semitone higher or lower than each natural equivalent. This forces the reader to remember the last key signature and the accidentals which happen before each note in order to recognize the emitone of each note. 

Key signature and accidentals aren’t used in the Leszer notation. Instead a note adopt a color, depending on whether it represents a white or a black key on the piano.   

 

Example (Comparison between traditional and Leszer Notation)

This rule removes all accidentals making easier to recognize which key corresponds to which note. Following example shows an excerpt of the fantasie-impromptu of Chopin in both notations

 

 

 In the Leszer notation, a sharp (#), a double sharp(x) or a natural note are equally complex represented: just a symbol.

 

Scales

 
 
 

 

 

 

 

 
As in traditional notation:

• The duration of a note can be modified adding a dot after the note
• Notes can be beamed together to improve readability