You don't suck, but you've kind of invented your own technique, which a proper singing teacher could probably do something with. The monkeys in the background added a certain something. The real problem, as it stands is the difference between the voice and the track - the track is polished and nice, then the vocal comes in and it's a tough match. Your voice would probably suit many contemporary songs, but perhaps not this track?
The monkeys in the background added a certain something.