This item was tested with batteries only. I do not have the AC adapter so I can't test/guarantee functionality with using the ac adapter.  With 4 AA batteries, all sounds/music functions. The blue night light on it is very dim. The top of this product has been discolored from the sun. This item is sold strictly *AS-IS*ALL SALES FINAL*. Batteries not included. Please message me with any questions prior to purchase. Thank you.