LOL. I don't know if I'll be much help, because I play the organ and not the keys, but the biggest thing is that the organ sustains by holding down the keys or the pedals, rather than using a sustain pedal. When you say organ, I'm assuming hammond, so there's a lot you can do with the sound as you play. I'm sure you'll learn all the drawbars and switches, but IMO the organ allows you to do more with less. You can hold down chords and change the sounds with the leslie and drawbars making something that would sound small and empty on the piano sound much more full.