Johnny Depp became a member of Willie Nelson's Family Band on Tuesday night (17Jun14) when he joined the country music stalwart for a show in Boston, Massachusetts.

The movie star, who is currently filming Whitey Bulger biopic Black Mass in the city, played guitar onstage at the Blue Hills Bank Pavilion throughout Nelson's set.

The frontman was determined not to make a big deal of his special guest, simply stating, "You got Johnny over here playing some guitar" as he introduced his band.

The gig marked the second time Depp has joined Nelson onstage this year (14) - the actor performed with the singer at Rodeo Austin in Texas back in March (14).