This audio track titled, "Variable Control Oscillator Rectangle," explores the versatile world of synthesis, modular systems, and sound effects. The track begins with the rich, warming sounds of a Doepfer A-110-1 Variable Control Oscillator, known for its unique ability to produce a wide range of sonically pleasing tones. The oscillator's power is showcased through a compelling exploration of a rectangle waveform, offering an almost visual representation of sound through its distinctively sharp edges and flat tops. As the track progresses, the oscillator's frequency is adjusted, creating a myriad of different pitches and tones, from deep, resonating bass notes to high-pitched, almost piercing sounds. The audio is a testament to the limitless possibilities of sound manipulation using a modular synthesizer.