Here I show a simple mathematical description for the most common genera of pentatonic scales – the modes of the major pentatonic scale – and related the model to the harmonic series. Specifically, I describe the major pentatonic scale using a single frequency ratio of 3/2, the interval relationship found between the 2nd and 3rd partials of the harmonic series. In western terms, the 3/2 frequency ratio is called a ‘Perfect 5th’.
An introduction to the western staff system of musical notation. It explains: the staff, treble and bass clefs (G and F clefs), note names, ledger lines, the grand staff, and how the staff maps to the equal tempered keyboard (the standard tuning for most western instruments)
The acoustical properties of noise (eg. static, rain, waves, snare drums) are shown using E.Q.