When a Sharp or Flat is added to a note it raises or lowers the note by a Half-step. For example, if we have the note C and we add a sharp to it the note now becomes C-sharp. If we have the note E and we add a flat to it the note now becomes E-flat.
Here are some examples of sharps and flats on the staff:
Naturals are notes without sharps or flats: C, D, E, F, G, A, and B. For example the note D can be called D-natural because it has no sharp or flat.
Here are the natural notes:
Natural notes sometimes have their own symbol attached to them:
Enharmonic notes:
Enharmonic notes are notes that have the same pitch but have different note spellings. For example, F-sharp and G-flat are enharmonic notes, as are C-flat and B-natural.
See how sharps and flats are arranged on a keyboard
