Episode Title:Calliope Dreams.Episode Description:King Triton wants Ariel to play the sea calliope: an instrument resembling an organ. However, she instead wants to play the new harp she found. The music from the calliope awakens the Seaclops. It is up to Ariel and friends to find a way to put the Seaclops to sleep again (in this episode, Wolfgang Amadeus Mozart has a cameo appearance). King Triton's paternal grandfather (Ariel's great-grandfather) also appears for the first time and Pearl makes her third appearance.