Sometimes monotone singing is good...
but when there is no rythm change in the song it gets boring. Create a music video on something people can dance to like "Six Underground"(sneaker pimps), "Play with me"(Insane Clown Posse), "dont stop"(Beastie Boys), "Club foot" (Kasabian), or even "Snap my picture - Smack my Bitch up" (prodigy).