Why did IU choose 'Immortal Song 2' over 'I am a singer'?

I bet this question must be at the top of everyone's head and here is the answer....

“Diva Girl” IU decided to appear on KBS 2TV new entertainment program “Immortal Music Classics 2”.

Producer of "I am a Singer" contacted IU

We maybe in for a treat seeing more IU performances! Not to mention seeing her ousting other singers *evil laughter*

The new head of MBC’s “I Am A Singer”, producer Shin Jung Soo, has listed the names of singers he is trying to recruit to the show.

IU listed as one of the singers by Ex-PD of "I am a Singer"

Kim Young Hee PD, the ex-producer of the hit series “I Am A Singer“, met up with reporters on April 18th and named his list of idols who are capable of appearing on the show.