Ehup, choykaiwenI teach my students to do this using a method that has yet to fail - "shadow playing", most of my kids call it. I learned it at music college when working on Bach Fugues, years ago and have adapted it for use with less advanced students.The problem is one of teaching two sets of muscles to work differently, so:1) LH alone. Move the fingers as though playing the notes, but do not actually depress the keys (advanced players depress the keys about half way, but this is too much for most kids).2) Keep on silently 'playing' the LH. Add the right hand playing the melody.3) Keep on silently 'playing' the LH. Play as loudly as possible with the RH - make the sort of sound you would hate were you to have to listen to it.4) Moderate the tone of the RH and actually play the LH. You should find you can play the LH very softly and make the RH sing.Ta-Daa. Instant muscle control. Most people find they can make a melody sing after a few minutes of this. Others need longer, but everybody succeeds within a few days.There are just a couple of points to bear in mind:1) When 'shadow playing' your LH, make sure you do actually move your fingers or you are wasting your time 2) The process I have described is the easy bit and usually takes minutes. Making the instrument truly sing, creating a magical sound that makes everybody else jealous - that takes a lifetime of study. Steve