The Hardest Part is the fourth single from Coldplay’s third studio album, X&Y. Unlike preceding singles Speed of Sound and Fix You, the track was released with only a single B-side – “How You See The World (Live from Earls Court).”
Despite being released ten months after the album it appeared on, “The Hardest Part” was well received as a single, charting on the Billboard Adult Contemporary chart and internationally in countries such as Australia, Poland, Italy and Belgium.