Cdnalsi

Hi guys! Looking for some help to create this effect: (as linked at 6:53) That Infinity effect sounds really nice as it makes it seem like the piano notes have way higher sustain. So how do I create such a reverb that actually stops when I release the note? Or that keeps going if I sustain pedal a certain note? I have Valhalla's products (that was a good spending spree) and also Fabfilter's suite. Any ideas, advice, tips, input would be very much appreciated! Thanks in advance!