Penta tonic Gate

Major pentatonic scale: Bo3 musical instrument


A pentatonic scale is a musical scale or mode with five notes per octave in contrast to a heptatonic (seven note) scale such as the major scale and minor scale. Pentatonic scales are very common and are found all over the world. They are divided into those without (anhemitonic) and those with semitones (hemitonic)..

The ubiquity of anhemitonic pentatonic scales can be attributed to the lack of the most dissonant intervals between any pitches; there are neither any semitones (and therefore also no complementary major sevenths) nor any tritones. This means any pitches of such a scale may be played in any order or combination without much clashing.

Anhemitonic pentatonic scales can be constructed in many ways. The major pentatonic scale may be thought of as a gapped or incomplete major scale. However, the pentatonic scale has a unique character and is therefore complete in terms of tonality. One construction takes five consecutive pitches from the circle of fifths; starting on C, these are C, G, D, A, and E. Transposing the pitches to fit into one octave rearranges the pitches into the major pentatonic scale: C, D, E, G, A.   (Wikipedia)


Wu Xing, the five phases, or five elements, is an ancient Chinese mnemonic and symbolic figure widely known in East Asia and used traditionally in applications such as medicine, acupuncture, feng shui, and Taoism. They are similar to the ancient Greek elements, with more emphasis on their cyclic transformation than on their material aspects. (Wikipedia)

App Store


July 2012: Bo3 for iPhone 3GS, iPhone 4, iPhone 4S, iPod touch (3rd generation), iPod touch (4th generation) and iPad on the iTunes App Store.

The Code

Look at the Bo3's example code.

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