Nobody Said It Was Easy — Coldplay

Lead singer Chris Martin wrote it about the desire to "go back to the start" after a relationship falls apart.

Watch the official 4K music video to see the incredible reverse-motion performance that became a staple of music video history: Coldplay Nobody Said It Was Easy

As the video unfolds in reverse, we eventually see the tragic event that the singer is trying to "undo"—a car accident that changed everything. Lead singer Chris Martin wrote it about the

While many people know this melancholic piano ballad by its famous lyric, the song is actually titled "The Scientist" . Released in 2002 as the second single from Coldplay's hit album A Rush of Blood to the Head , it has become one of the most recognizable anthems of the 2000s. The Meaning: Head vs. Heart Coldplay Nobody Said It Was Easy