Post, discuss, etc.
a song or composition created by blending two or more pre-recorded songs, usually by overlaying the vocal track of one song seamlessly over the instrumental track of another.
I intitially got into listening to mashups about a month or a month and a half ago when I found a small subreddit dedicated to mashups (where I got the mediafire links below from). Have really been enjoying them lately and thought I'd share with ISH, and you can share any that you like as well.
Best of July 2012 Collection
Best of August 2012 Collection
KO Mashups on YouTube, a Personal Favorite