Successfully complete the following tasks to get the corresponding sound set:

Planet Anasaze: Successfully complete the Branch route.
Planet Brabbit: Launch at least 10,000 Meteos.
Planet Cavious: Accumulate at least one hour of game play.
Planet Freaze: Unlock four Branch route endings.
Planet Layazero: Successfully complete a 1,000 Meteo war in less than 3:00.