Lost electric keyboard with rainbow and guitar stickers near the picnic area of a park in Muncie, Indiana.

I lost my electric keyboard while walking my dog in the nearby park in Muncie. It has some distinctive stickers on the back, including a rainbow and a guitar. I think I might have dropped it around the picnic area. I've had it for years and I'm really hoping to get it back. If someone found it, I would really appreciate your help!