Original sentence: Most music is written for two hands; typically the right hand plays the melody in the treble range, while the left plays an accompaniment of bass notes and chords in the bass range.Players need to learn to coordinating two hands and use them independently.Some music is written for the left hand alone, such as Godowsky's 53 Studies on Chopin's Etudes and Ravel's Piano Concerto for the Left Hand.ones that respond to varying force with which the key is struck) may require independence of the fingers so that some fingers are able to strike harder while others play more softly
Edited sentence: Examples of this writing include many of Godowsky's 53 Studies on Chopin's Etudes and Ravel's Piano Concerto for the Left Hand.It is required to play both the melody and accompaniment at the same time.Most non-trivial music is written for two hands, where often the right hand plays the melody in the treble range, while the left plays accompanying chords in the bass range.Some extremely challenging music is written for the left hand alone.The other problem that can be daunting for aspiring keyboard players is coordinating two hands yet being able to control each one independently.This two-hand coordination skill is (arguably, like most aspects of keyboard playing) not as much a matter of hand dexterity, as rather of the brain's ability to distinguish between two melodic lines, and ultimately execute and coordinate them in real-time, which takes some time to develop.ones that respond to varying force with which the key is struck) may require independence of the fingers so that some fingers are able to strike harder while others play more softly etc