Concertgoers at Kenny Chesney's recent Poets and Pirates show in Boston were treated to guest vocals by some rather unlikely celebrities. Several hometown heroes showed up to party with Chesney and fans, and they felt so much at home they had to sing about it.

New England Patriots Teddy Bruschi, Mike Vrabel and Wes Welker, along with Boston Red Sox Mike Timlin, Tim Wakefield, Sean Casey and Jacoby Ellsbury joined in on Chesney's hit 'Back Where I Come From,' and later returned to rock the crowd with their rendition of the David Allan Coe hit 'You Never Even Called Me By My Name.'

"Those guys are so much a part of this town, to have them out here's an honor," said Chesney.

The country superstar returns to Boston on September 20 for the 23rd annual Farm Aid concert, to be held this year at the Comcast Center. It will mark his second appearance at the star-studded show to benefit America's family farmers.

Chesney joins Farm Aid organizers Willie Nelson, John Mellencamp and Neil Young for the show, which will also feature Dave Matthews and a host of other stars. The country star plans to make a rare acoustic appearance, with just a handful of musicians accompanying him.

"I think stripping it back . . . really putting the songs out front, is a way to give the fans a whole different experience, since they've just seen us," Chesney explains of his upcoming Farm Aid performance. "And I also think taking it back to the most basic way we can do this says a lot about what this event is trying to focus on."

Chesney will have just wrapped his 2008 Poets & Pirates tour at Indianapolis' Colts Stadium a week prior to the Farm Aid event.