I have found the DreamGrand Performance in the S90ES which gives a Piano&Strings sound with a delay on the piano sound.  It works great for the intro to a song I play in my church called Who You Are.

My question is, is there a way to turn off the delay effect, which seems to use an arp to do the delay, so I can control when the effect is present during performance.  I have searched the forums and manual without success.  Thanks for your hep.