I've recently downloaded an article about the Pentatonic scale and the moods generated by modality just as were stated in Desi's book Guitar Theory. It's entitled Pentatonic Harmonics in Fourier Transforms: Why the Blues are Blue. It basically explained the emotional responses to the seven modes as they pertain to the Pentatonic Scale. The article also stated the history of the Blues as well as the frequencies or waveforms by the three parameters of Loudness, Quality, and Pitch.
It listed a procedure for writing your own music. Simply put, if you're trying to promote a certain emotional response in a particular person, audience, etc.. a little bit of scientific measure may be in order with an experimental audience to listen to some of the samples in your music, chords in particular. Some of the characteristics that are listed to consider are the following:
(a) Distance form chord change
(b) Distance from tonal change
(c) Acceptance of contemporary notions
(d) Acceptance of the inverse
Apparently, the perception of emotions to cord or note change is relative to the order of the chords or notes. I thought this to be rather obvious, but the article is really interesting none-the-less. It explains how to conduct a test of your own music writing. It can found by simply typing into your browser psychological implications of music. You will then see the title of the article on the first page. When I downloaded the article and printed it as such, there was not an address for it.
