Fleetwood Mac singer Stevie Nicks has become an adviser to Adam Levine's team on The Voice US.

Billboard.com reports that Nicks has been working with the Maroon 5 frontman and his 12 singers as they prepare for the show's battle rounds.

The Voice US will return to American television on September 22.

Levine stars in Irish director John Carney's new film Begin Again, which opens in cinemas on Friday July 11.