Treli Kardia (Crazy Heart) is the second single from Elena Paparizou as a solo singer. The song is featured on the CD Single "Anapandites Kliseis" which was released on December 28, 2003 and also at Paparizou's first solo album Protereotita released in June 2004.The song became a big radio hit in all Greek radio stations as long as many Swedish singers wanted to cover the song into their language in 2010.