Interesting mix...
But to be honest I feel you have a lot riding on just the chart success of the song, the popularity of which can probably be attributed to the pounding 1,2,3,4 rhythm that the guitar introduces and gives it a good beat all the way through. Instead what you've done is lessened that in a way and put in extra drums with a violin (violin??) which, even though I know you were trying to be different or whatever, I think takes away from the essence of the song which is supposed to be about putting your kit on and painting the town red. Although what you've tried is a solid mix, it really doesn't change enough for me. Even your title's a bit bewildering. "I've Gotta Feeling, Just Relax'. I'm not sure why you picked a song about going out all night and having a ball to turn into a remixed relaxation number but that's just my opinion.
3/5
6/10
Mostly because the quality is very good.
Keep it up man.