I made a C Major Triad using a sine oscillator morph into a square oscillator over 30 seconds. On top of that is a constant plucking C major arpeggio. It is interesting to hear what happens to the arpeggio as the wave changes. As the waves morph from sine to square waves, many more harmonics are produced causing the chord to take up a lot of the mid frequency range. Audibly, this acts as a high pass filter to the arpeggio which I found pretty awesome.