Musical note commonly), a double sharp sign on a key signature with a single sharp indicates only a double sharp, not a triple sharp. Assuming enharmonicity, many accidentals will create equivalences between pitches that are written differently. For instance, raising the note B to B is equal to the note C. Assuming all such equivalences, the complete chromatic scale adds five additional pitch classes to the original seven lettered notes for a total of 12 (the 13th note completing the octave), each separated by a half-step. Notes that belong to the diatonic scale relevant in the context are sometimes called "diatonic notes";
Diatonic and chromatic contrast, the remaining bars are highly chromatic, using all the notes available to convey a sense of growing intensity as the music builds towards its expressive climax.] A further example may be found in this extract from Act III of Richard Wagner’s opera "Die Walkure" . The first four bars harmonize a descending chromatic scale with a rich, intoxicating chord progression. In contrast, the remaining three bars are entirely diatonic, using notes only within the scale of E major. The passage is intended to convey the god Wotan putting his daughter Brunnhilde into a deep sleep. <score vorbis="1"> { \relative