 Kondo experimented with several different genres of music, unsure of how to follow up the music from the first game after hearing from several people that it sounded a lot like latin or fusion music, and came up with several different melodies throughout its development before settling on what ultimately made it into the game.The development team decided that music on the title screen was unnecessary.During 1988, a global shortage of ROM chips, along with Nintendo's preparation of "Super Mario Bros. 2", prevented Nintendo from performing various North American game releases according to their original schedules.