Moog's development was driven by requests and suggestions from various musicians, including Richard Teitelbaum, Herbert Deutsch (who devised the instrument's keyboard interface), Vladimir Ussachevsky, and Wendy Carlos. His other early customers included choreographer Alwin Nikolais and composer John Cage. Moog described himself as a toolmaker, designing things for his users, not himself. Universities established electronic music laboratories with Moog synthesizers. The synthesizer was followed in 1970 by a more portable model, the Minimoog, described as the most famous and influential synthesizer in history.