These are goods from "Inai Inai Baa!" (Peek-a-Boo!). The U-tan plushie has a bell inside. The trumpet plays a song when you press the button. The volume cannot be adjusted, and it's very loud. The maracas have peeling stickers. The U-tan one plays a song. The button is a little slow to respond, but the song still plays. Please feel free to ask if you have any other questions (⁠◍⁠•⁠ᴗ⁠•⁠◍⁠)