With the inclusion of sharps and flats, there are 12 different notes within one octave as shown here. The notes and
are always one semitone apart. A semitone is the smallest possible distance between two notes. All the other natural notes are a tone apart (two semitones). Sharps ( # ) and flats ( b ) are found between the notes that are a tone apart:
This scale is called the chromatic scale and contains all the sharps (#’s) and flats (b’s) possible. C sharp (C # ) has the same position on the keyboard as D flat (Db). They are the same note but can have different names depending on what key you are playing in. The same applies to D# /Eb,F# /Gb, G# /Ab and A# /Bb. These are called enharmonic notes.