I think Willy was trying to explain that the music industry in 1998 (or 2004) =/= the music industry in 2012. We have iTunes now. People don't have to buy compilation albums anymore. They can buy each song separately.
@GagaFan: Dance Again peaked at #18. (It did better than my favorite Gaga song, Marry the Night)
Too bad you didn't go to her show, Ale-Alejandro! People who went to the show in New Jersey had an amazing time! Several ATRLers can confirm this.