Thanks guys! haha Ron, sometimes when I wake up my hair is sticking up in all directions too. Maybe I should make a video with just that look. Heck, maybe that should be my new hairstyle for life in general!
And thanks guitarer, a lot of it was vocal doubling. Basically recording the same part twice and putting them over each other. The original song does this too but probably more discreetly.
I also used "WavesTune" which is like Melodyne and AutoTune. I try not to overdo it though. All I do is 'scan' the vocal once and let it do its thing. I don't go in and fix specific pitches, and if the performance is off, then it shows.