After songs have been completed, they can be replayed individually. Melody of Memory features three-person parties, of which there are four different groupings.
Once new parties have been unlocked, they can be used at any time. Disney characters serve as guest members in their specific themed worlds, bringing different sounds and symbols to the gameplay. King Mickey serves as a fourth party member, assisting the player with healing and additional rhythm points when activating the 'Summoning Star' item. Traversal between each of the worlds is done through the Gummi Ship, a system used in previous mainline Kingdom Hearts games.
