I was wondering how you go about practising. I have seen people sit down at a keyboard and start playing beautifully and they have no music in front of them. Do you play certain songs over and over until you know them by heart, or do you memorize an individual song before going on to the next? I can play a lot of music but I must have the sheet music. I want to learn to play some songs without sheetmusic. What do you suggest?