Even if you know next to nothing else about Martin O'Malley, you're likely aware of at least two facts: 1. He's running for president, and 2. He plays the guitar.

In fact, for more than two decades, O'Malley's been the frontman of the Irish folk rock band O'Malley's March, which once opened for his musical heroes, The Pogues.

As far as the campaign trail is concerned, O'Malley's handlers have encouraged him to show off his musical talents to voters in Iowa and New Hampshire, and to whip out his guitar and strum a few chords of Taylor Swift's "Bad Blood" on The View.

The former governor of Maryland's wife was apparently less convinced the View stunt was good idea, as she told Rolling Stone's Stephen Rodrick, "I think Taylor Swift and Ryan Adams have really done that song justice and it needs nobody else."

Enjoy these ten moments in O'Malley's musical history, in which he covers everyone from Johnny Cash to Green Day.