The Pretenders [ tickets ], Steve Earle [ tickets ], moe. and Arlo Guthrie [ tickets ] are among the acts who've joined the roster for this year's annual Farm Aid benefit concert.

Other artists confirmed to appear at the Sept. 20 event--set to take place at the Comcast Center in Mansfield, MA--include Jerry Lee Lewis, Nation Beat, Grace Potter and the Nocturnals, Jakob Dylan and the Gold Mountain Rebels, Danielle Evin, Jamey Johnson, Jesse Lenat, Will Daily, One Flew South and The Elms.

As previously reported, the aforementioned acts will share the stage with Farm Aid co-founders Willie Nelson [ tickets ], John Mellencamp [ tickets ] and Neil Young, as well as fellow Farm Aid board member Dave Matthews, and country star Kenny Chesney, who signed on last month.