I had a Yamaha P-140 that had a piano + strings patch that I grew accustomed to that I'm trying to recreate. The strings would gently fade in behind the piano, and if you were holding the sustain pedal (but released your fingers from the keys) the strings would gracefully fade out (quicker than than the decay of the piano). If you held the keys down with your fingers, the strings would continue to sustain for as long as you held the keys down (versus fading out like when using the sustain pedal). I've managed to figure out how to set the attack to fade in on my PX-5S, but I can't figure out how to set them to fade out when sustaining with a sustain pedal while remaining full volume for as long as keys are held down. Anybody have any ideas how to achieve it?