When this card is revealed from the Deck by your "Song Princess" family Spirit, or sent to the Trash by your "Producer"-named Grandwalker Nexus, you can add it to your hand
Flash - Refresh a "Song Princess" family Spirit you control. Also, by sending ten cores from a "Producer"-named Grandwalker Nexus to the Void, during this turn, one of your "Song Princess" family Spirits has five Yellow Symbols. Then, you can put this card on your field.