Musicologists feel that minimalism in music was a reaction to the cerebral methods of composition and the lack of emotion in serial music and other modern forms. Often minimalist composers strive to create a simple melodic line and harmonic progression; they stress repetition, often with minute variations, and rhythmic patterns. The use of electronic instruments are often found in minimalist music along with musical ideas from Asia and Africa. Among prominent minimalist composers are Philip Glass, Steve Reich, Terry Riley, La Monte Young, and John Adams.