Empire of the Sun's "Walking on a Dream" is one of the more under–appreciated songs of the past five years.  Ludacris' "How Low" is one of the more over–appreciated songs of the past five years. Together, they make a mash–up worth everyone's appreciation.  Put together by a youtube personality who probably didn't realize the gold he was striking, the mash–up perfectly matches the emphasis of the rhymes to the ups and downs of the "Dream" melody.  The real kicker is a fun little guest spot by Lil' Wayne that comes off the Young Money medley "Bed Rock." Overall, the song is an especially fun and easy example of a mash up done well.

 

http://www.youtube.com/watch?v=G-nNHmh7Ick

 

http://www.purevolume.com/new/thisiscivic