1. For Technique:
Many pianists have one hand that is weaker, slower, or less efficient than the other. One-handed piano music may be beneficial for those who seek to enhance their technique in a particular hand with music that sounds complete and satisfying.
2 .For Continued Progress:
Pianists who suffer from an injury in one hand may find themselves slipping behind if there is a lapse in their musical studies. Teachers and pianists often turn to one-handed piano music to make sure the mind and active hand is engaged while the injured hand recovers.
3. For Variety in Repertoire:
One handed piano music also serves as a great way to build a unique repertoire for those looking for variety. So often we associate a full layered sound with two hands playing but there are many pieces for one hand that can be exciting, beautiful, and layered in sound.
Below are a just few examples - there are many more to choose from.
Left Hand Alone:
Right Hand Alone:
For Right Hand or Left Hand Alone: