The term 'Synthesizer Inventor' is associated with Robert Moog, a four-letter name. Moog was an American engineer and pioneer in the development of electronic music. He is best known for his invention of the Moog synthesizer, which revolutionized the way electronic music was created and performed. Moog's synthesizers were used by many popular musicians in the 1960s and 1970s, and he continued to develop new technologies until his death in 2005.