Synaesthesia vs. Ibiza Sky mashup

Here is a mash-up I've been working on lately of Thrillseekers - Synaesthesia and Kenny Hayes - Ibiza(Alex M.O.R.P.H.) Its my first try at making a mash-up, so I'd really appreciate constructive criticism, anything you got!

YouTube - Thrillseekers vs. Kenny Hayes & Alex M.O.R.P.H. - Ibiza Synaesthesia Sky (Squeekz Mash-up)
~Squeekz