Music is said to be polyrhythmic if two or more rhythms or meters are superimposed in a single passage, one pulling against the other(s). Masters of polyrhythm in the twentieth century include Stravinsky, Bartók, and György Ligeti. In the "Procession of the Sage" from Stravinsky's Rite, tubas play a sixteen-beat figure three times, horns play an eight-beat phrase six times, a guiro plays eight pulses to the bar, the timpani play twelve pulses to the bar, and so on.