If you attended the Brad Paisley show at the Saratoga Performing Arts Center (SPAC) this past June you will be heard on his latest single "Mona Lisa". The song, from his latest album "Wheelhouse" was performed during his June 2nd show and now Brad has reworked the tune to include the crowd on the ending refrain.

Brad explained the situation recently to GAC.

In the big refrain to ‘The Mona Lisa,’ there are actually 10,000 people recorded live in Saratoga Springs, New York,” he said. “In concert, I said, ‘Who wants to be on the new album,’ and what you hear at the end of the song is the audience singing the ‘whoas.’ So if you live in Saratoga Springs, and you were at our concert last time, you made the album!”

via Brad Paisley Includes His Fans On Latest Single | GAC News & Notes.

Check out his performance of the song in Las Vegas. Apparently the Vegas crowd didn't do the refrain nearly as well as the folks at SPAC. So far now word on any royalties due to concert goers.