On American Idol do the contestants have to sing radio singles?

Question by Sunshinestars: On American Idol do the contestants have to sing radio singles?

Best answer:

Answer by just a thought
If you are asking if they have to sing songs off the radio, the top 100 or top 40 for example, not necessarily. However, songs sung that are completely unfamiliar to the audience has proven to detrimental to the contestant.

Know better? Leave your own answer in the comments!