I also own all the previous albums, so this again was an absolute must for me. The great thing about this particular Ablum is that here found off the charts place the absolutely latest songs. In the previous albums, the songs by the late release here in Germany were already a bit older. My personal favorites are "Need You Now" (from the Grammy-Abräumern Lady Antebellum), Firework (Originally by Katy Perry) and the two covers of Michael Jackson.
So for really every Gleek absloutes a must. I know the consequences already dazughörigen of the broadcast from America, but even if the consequences were not aired here in Germany, you can probably already imagine such a little, like the songs could be well embedded in the series.