Squealing with delight

A dear friend gave us a huge bag of hand-me-down books, and in sorting through them I was about to pass along one with a mechanical song-playing feature that I found annoying.  But I accidentally pushed the button and Aggie lit up and squealed with delight as the little tune played.  By the way, Henry also loves it!  We've played all the tunes and sung the little verses a hundred times in the last two days.