Key signature key signatures showing sharps or flats on both octaves for notes which fall within the staff. An accidental is an exception to the key signature, applying only to the measure and octave in which it appears. Although a key signature may be written using any combination of sharp and flat symbols, the most common series of thirteen homogeneous key signatures—ranging from six flats to six sharps, with each successive flat or sharp placed on the note a perfect fifth below or above, respectively, the previous one—is assumed in much of this article. A piece scored using a single diatonic key
The Signature Series featured in the episode are mentioned. On SoundCloud, the pieces in each episode are timed such that when the piece changes, the pop-up comment identifies the piece being played, together with the composer who wrote the music. Each key has an image, with its name, its nickname, and a person (or animal, in the case of C minor) whose personality is representative of that key on it, except for C major, whose picture is that of the sky and the sea, with no people featured. Ben Didier of CBC music is the designer for the images. The Signature Series is