Reply to Mashup Help

Hey guys!
I've recently started using ableton live to do some mashups and this is the first fruits of my labour... however there are some parts of it that sound very off to me and i'm not quite sure why... So please be critical of this mashup so i can keep working it out. Thanks for the help!

The mashup is Living on a Prayer by Bon Jovi and City of Lights by Lush and Simon.
It is also a private soundcloud link so if its not opening for some reason let me know.


EDIT: Thanks for all the Help guys! Full Final Version is a free Download Here: https://soundcloud.com/djd-rise/livi...city-of-lights

EDIT 2: Here is the Extended Mix:
https://soundcloud.com/djd-rise/livi...s-extended-mix