The Corrs Unplugged is an album by Irish band The Corrs, released in 1999. The album is part of MTV's Unplugged series. It was released internationally but for a short time was not available in the United States until later. The song "No Frontiers" was sung by Sharon and Caroline, with Jim playing the piano. It is a cover of the Mary Black song, written by Jimmy MacCarthy.This session was recorded live on October 5, 1999 (1999-10-05) in front of an audience at Ardmore Studios, Co.