"I Told You So" is a song written and recorded by American country music singer Randy Travis from his 1987 album, Always & Forever. It reached number one on the U.S. Billboard and Canadian RPM country singles charts in June 1988. Travis had first recorded it on his 1983 album Live at the Nashville Palace under his stage name "Randy Ray". It became a local hit and one of his most requested songs at the club. In 2007, the song was covered by Carrie Underwood on her album Carnival Ride. Her version was released in February 2009 and was re-recorded and re-released in March as a duet with Travis. Underwood's and Travis's duet peaked at number two on the U.S. country charts in 2009.

Answer this question based on the passage: who sings i told you so country song? OK. Let's think. My stream of consciousness:
The relevant information is: "I Told You So" is a song written and recorded by American country music singer Randy Travis from his 1987 album, Always & Forever. The answer is American country music singer Randy Travis.