This seems to be credited to Nobuo Uematsu and the Dog Ears. “Here Comes Conga Boy” is ridiculous in a good way. Silly voices at the beginning give way to a a nice jaunty song, slightly homey and old-fashioned sounding. But as the song goes on it starts to go insane. The singer starts being a bit silly. She sings in Spanish briefly, with a snatch of Mexican-sounding music. Then the music gets quite slow and dreamy. Then mad voices appear and the music starts sounding jaunty and normal again, before the mad voices start babbling again. Overall, it’s quite enchanting.
Source: Japanator Radio 97