I was looking for it aswell, did not find the one I liked, so I said f it and made one myself, probably will make a better version this one is a bit rushed and not really good
A child's voice sings: Далеко, далеко, ускакала в поле молодая лошадь Так легко, так легко, не догонишь, не поймаешь, не вернёшь Translation: Far, far away, a young horse galloped into the field So easy, so easy, you won't catch up, you won't catch, you won't return