Conversation so far:
What happened in 2009 and 2010 to Shinee?
Shinee released the digital version of their third extended play, 2009, Year of Us, on October 19, 2009, with a physical release on October 22.
Did Shinee become popular after they released the digital version of their third extended play, 2009, Year of Us, on October 19, 2009, with a physical release on October 22?
In early December 2009, the group was also awarded with the Popularity award along with Super Junior at the 24th Golden Disk Awards.

Question: How did they become involved with Lucifer?
Self-contained rewrite: How did Shinee become involved with Lucifer?