This document discusses the history and development of early synthesizers and their use in music. It describes how Robert Moog and Donald Buchla developed different approaches to modular synthesizer design, with Moog focusing on keyboards and standardization for accessibility and Buchla focusing on experimental uses. Over time, the Moog design became more dominant as keyboards and standardization allowed synthesizers to be used by more mainstream musicians, while Buchla systems remained in niche markets. The document also discusses how Moog cultivated relationships with early adopter musicians to help refine his designs.