I hope you're not speaking of thos really cheap ones that you type in the speech...
If you are, consider getting a mic. Then, say the lyrics as monotonously as possible, then learn how to use a vocoder. Then you can play whatever notes you want :)
Anywho. The song sounds pretty good and original. Good work, keep it up!
thanks for the advice. i already have a mic but it's a little crap but i'll try it anyway for another song and hopefully it'll come out better.