In Western music, there are twelve musical notes. The first seven notes in to remember in the musical alphabet are A, B, C, D, E, F and G; these are natural notes. The other five notes are sharps or flats, and they fit between some of the first seven notes.
There are 12 sharpened and flattened notes: C, Db, D, Eb, E, F, Gb, G, Ab, A, B and Bb. Some notes have two names. For instance Ab is also called G#. Cb is sometimes called B. In some scales you can have a double flat or sharp. Abb is G. Ebb is D.