I decided to buy this CD after the interest of the actor and musician Darren Criss to this group. I did not know that the version of Glee It's Time (played also by mister Criss) and I loved him very much. So I quickly listened to a song randomly (Radioactive) before buying the CD and to have the surprise of the other songs. It is now a staple of my music library and I really recommend it to anyone who might hesitate to buy it: go for your eyes closed!