VIDEO : Chris Martin, Jimmy Fallon Sing David Bowie's 'Life on Mars?'

Chris Martin and Jimmy Fallon delivered a simple, but sweet, performance of David Bowie's "Life on Mars?" on The Tonight Show Monday. The pre-recorded clip found Fallon stumbling across Martin backstage at a piano and asking what the Coldplay frontman was working on. Martin previously honored Bowie ? who died in January after a secret 18-month battle with cancer ? with a carpool karaoke cover of "Heroes" on The Late Late Show With James Corden. "He's got very high standards and I appreciate that.