A guajeo is a typical Cuban ostinato melody, most often consisting of arpeggiated chords in syncopated patterns. Guajeos are a seamless blend of European harmonic and African rhythmic structures. A piano guajeo may be played during the verse section of a song, but it is at the center of the montuno section. That is why some salsa musicians refer to piano guajeos as "montunos". Piano guajeos are one of the most recognizable elements in salsa music. As Sonny Bravo explains: "In salsa, the piano is more of a percussion instrument than a melodic one, especially in ensemble playing. When you're backing a soloist, you play a riff over and over again. This is what we call "guajeo". The pianist uses this guajeo to provide the rhythm section with its drive."