Girl Talk” is the stage name of Gregg Gillis, a Pittsburgh musician who creates mashups of pop songs. The 2008 Girl Talk album, “Feed The Animals”, samples 322 songs, and Wikipedia users have identified and cataloged most of them. Using that data the guy on this website created a player so you can see what samples are playing as you listen to the album.

To check and identify the use of samples in general, make sure to check out this website.