Kreisler makes considerable use of portamento and rubato. Chopin primarily marks rubato to emphasize expressive melodic lines or repetition. Some theoreticians, however, rejected even the idea that rubato relies on accelerando and ritardando. The track features a tempo rubato that is without precedent in the Beatles' catalogue. Stolen Time&colon; The History of Tempo Rubato by Richard Hudson - Lloyd, William. Slower ballads and duets may feature rubato playing and exotic harmonies. Thus, Chopin's rubato can be approached with delaying or anticipating those melody notes. The nocturne also includes a subordinate melody, which is played with rubato. Some writers compared this type of rubato to declamation in speech. Another example of this usage of rubato occurs in the Mazurka Op. For example, the rubato marked in bar 9 in Mazurka Op. Johann Friedrich Agricola interpreted rubato as "stealing the time". Terre Thaemlitz recorded a piano version on the tribute album "Replicas Rubato" (1999). In the music of Chopin, the word "rubato" appears in just 14 of his works. Definitions of musical concepts (such as rubato) cause misinterpretations if they disregard artistic musical expression.