Well, it's originally sung by Ami Suzuki, but since this is the Latin version, I really honestly don't know who's singing it. All I know is, that it's not Ami Suzuki.
![Very Happy :D](./images/smilies/icon_e_biggrin.gif)
It's probably just one of the voice actors for the Latino dub of the show. (Maybe like they had the person who acted Pinoko or Wato or someone like that sing it.) Or, probably just some random singer out there in Latin America.
![Laughing :lol:](./images/smilies/icon_lol.gif)
(Like maybe one of the staff who works for Animax or the dubs.)