Section 1.4 Accidentals
There are five types of accidentals; accidentals are characters that can be placed before notes to raise or lower them.
The sharp symbol—♯—raises a pitch a half step.
The flat symbol—♭—lowers a pitch a half step.
The double sharp symbol—𝄪—raises a pitch two half steps, or a whole step.
The double flat symbol—𝄫—lowers a pitch two half steps, or a whole step.