We've got a climber!

About a week ago Bear started to climb up on his piano. He gets to the top and doesn't know what to do. He hasn't figured out how to climb back down, so he whines until I come and rescue him. I have been taking longer and longer to get him, thinking maybe he will get the clue that this is not the smartest thing to climb on. I even keep the lid off the thing, but he still climbs up and stands on the little edges of it. Today I took a picture: