Ahhh....such an incredible show. I've listened to that Eyes so many times I think I can recite (or hum, anyways) Branford's parts all the way through.
I believe it is a MIDI, and it comes in during the 2nd solo (after the 2nd verse), and then he switches to another effect, not sure if that one is MIDI or not. The one you speak of sounds like one of those African wind chimes or something; something "horny" anyways....

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