Country stars Brad Paisley, Randy Travis and beloved season four champion Carrie Underwood grace the American Idol stage on Tuesday and Wednesday for Grand Ole Opry week.

In what ought to be an interesting series of performances, the remaining 11 singers will perform songs popularized by the members of the Opry, a weekly radio and stage show that has been a Nashville institution for decades.

Can you picture Lil Rounds (pictured) or Anoop Desai going country? Neither can we.

On the March 18 elimination show, Underwood will perform “I Told You So” with fellow Opry member Travis. The latter will act as the show’s mentor for the week.

Paisley will perform his new song “Then” the same night.

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.