In the world of music, analog keyboards have a timeless appeal, captivating musicians with their warm and rich sounds. These instruments rely on the magic of analog circuitry, which forms the foundation of their unique and expressive sonic character. At the heart of this circuitry are two essential building blocks: oscillators and filters. Oscillators generate the raw sound waveforms, while filters shape and sculpt the sound, allowing musicians to create a diverse range of tones. In this blog, we will delve into the fundamental elements of analog keyboards, exploring the benefits of oscillators and filters, understanding their role in sound synthesis, and uncovering the factors that influence their design.