The singer of the band Omerta owned a toy keyboard that he had kept since childhood and wanted to incorporate into the band’s music. Knowing that I had experience circuit bending children’s electronic toys, he approached me and asked if I could modify the keyboard for him. Rather than simply carrying out the modifications myself, he wanted the project to be collaborative so that he could learn the process of circuit bending along the way.
My aim throughout the project was to introduce him to the fundamental techniques of circuit bending and demonstrate some of the simpler methods that can be used to alter and manipulate electronic instruments. This created an opportunity not only to modify the keyboard but also to share practical knowledge and encourage experimentation with sound.
The first modification he requested was the addition of an output jack. This was a relatively straightforward process. I began by identifying the positive and negative terminals connected to the keyboard’s built-in speaker. I then wired these directly to a quarter-inch output jack, allowing the keyboard to be connected to external amplifiers, effects pedals, and recording equipment. This significantly improved the instrument’s usability in both live and studio settings.
The second modification involved creating a frequency distortion circuit. To achieve this, I first removed a resistor that was connected to the keyboard’s oscillator chip. I then attached three wires: two connected to resistors and one connected to a transistor. These connections were routed to a B10 kΩ potentiometer. Approximately half of the potentiometer’s sweep controlled the pitch and frequency characteristics of the distortion effect, while the remaining range acted as a dry/wet mix control, allowing the user to blend the original signal with the distorted signal. This modification introduced a wide range of unpredictable tones and textures, greatly expanding the sonic capabilities of the keyboard.
The final circuit bend was a fuzz pulse LFO modification. While this shared similarities with the previous fuzz distortion circuit, it was designed to create a feedback loop that generated a pulsing low-frequency oscillation effect throughout the keyboard’s audio output. This produced rhythmic fluctuations in the sound, creating unusual textures and movement that could be manipulated in real time.
Working collaboratively on this project was a learning experience for me. While I was confident in the practical aspects of circuit bending, teaching the process to someone else required me to think more carefully about how I explained technical concepts. I had to develop ways of communicating the purpose of individual components, the function of different circuits, and the terminology associated with electronics in a way that was accessible and easy to understand.
What interested me most about this project was the collaborative nature of the process. Rather than simply modifying an instrument for someone else, I was able to help create a unique tool that the musician could use within his own creative practice. By involving him in the modification process, I encouraged experimentation and exploration, allowing him to gain a deeper understanding of how electronic instruments can be manipulated to produce new and unexpected sounds.
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