Messiaen had a great admiration for the music of Igor Stravinsky, particularly the use of rhythm in earlier works such as "The Rite of Spring", and his use of orchestral colour. He was further influenced by the orchestral brilliance of Heitor Villa-Lobos, who lived in Paris in the 1920s and gave acclaimed concerts there. Among composers for the keyboard, Messiaen singled out Jean-Philippe Rameau, Domenico Scarlatti, Frédéric Chopin, Debussy and Isaac Albéniz. He loved the music of Modest Mussorgsky and incorporated varied modifications of what he called the "M-shaped" melodic motif from Mussorgsky's "Boris Godunov", although he modified the final interval in this motif from a perfect fourth to a tritone ("Example 3").