The instrumental "Night Music" of the 18th century, intended to be played in the open air, was the origin of the Nocturne form. Mozart and Haydn both composed Notturni for various ensembles. However, it is John Field who is considered to be the creator of the Nocturne for piano. Chopin held him in high esteem and often made his pupils work on Nocturnes by this Irish pianist and composer so that they should learn the art of legato and develop a good tone.