Analog synthesizers are electronic musical instruments that generate sound using analog circuits and signals. They create sound by manipulating electrical voltages, which can be shaped and modified through various components like oscillators, filters, and amplifiers. This process allows musicians to produce a wide range of tones and textures, making analog synthesizers popular in genres like electronic, pop, and experimental music. These instruments often feature knobs and sliders for real-time control, allowing users to tweak parameters and create unique sounds. Notable examples of analog synthesizers include the Moog Minimoog and the Roland Juno-106, both of which have left a significant mark on music history.