There is often more than one way of writing a particular note. For example, the note F sharp can also be called G flat. These two notes have exactly the same sound and the same fingering.
Therefore, either spelling of the note may occur in the written music. This is called enharmonic spelling of the same note. The C Blues scale is often written using a Gb note instead of an F# note. The following example uses both versions of this note.
This E note is written in the fourth space of the staff.
The high Eb note uses the same fingering as B. Here are some examples making use of this note. Play them slowly at first until you are confident with them.
This one uses frequent alternation between E flat and E natural.