They do this by subtle movement of their fingers and wrists, along with the complex interaction of the right pedal, which extends the duration of a note and varies its timbre.
Biasanya itu dilakukan melalui gerakan halus jari - jemari dan pergelangan tangan, dipadukan dengan gerakan kaki di pedal kanan. Dengan begitu, nadanya bisa diperpanjang dan warna nadanya bisa divariasikan.