Wilco worked a sensational 2 1/2 hour set Saturday night at Mass MoCA's Joe Field. Lead singer Jeff Tweedy thanked the thousands in attendance (official number of tickets sold have yet to be released by event organizers):

"Thanks for letting us take over your town, or at least part of it," he said.

The freight train could be heard during one of Wilco's songs, and Tweedy quipped:

"You guys hear that train go by? We made that happen. It's part of our installation."

Tweedy also got the fans involved, letting the masses sing the first two verses to "Jesus, Etc." He said it was one of the top three renditions he's ever heard from an audience.

The band's frontman also made reference to coming back next year, which garnered a huge roar from the crowd.

Still plenty more to come Sunday on the third and final day of the Solid Sound Festival. Keep it here at iBerkshires.com for more coverage.

Wilco is set to take the stage in about an hour. The crowds around Mass MoCA are swelling and the anticipation for the big set is building. Check back later tonight for updates on attendance figures.

Jeff Tweedy prepared for his band's show by taking a swim — or several for that matter. Tweedy, along with other members of Wilco, hopped aboard a dunk tank earlier this afternoon. The money raised will go to local charities to support arts education.

Here's a picture of Tweedy bracing for impact.

Todd Barry took to the Hunter Center stage at about 4 p.m... Had the crowd in stitches...

Wilco drummer Glenn Kotche gave an explanation/demonstration of his drum installation at the Sol Lewitt .... Best moment came when Kotche looked at one of the drums and said, "Oops, looks like somebody bled on this one." Who said art wasn't supposed to be painful?

Bunch of music today! Here are a couple photos. .. Time for the big show , and then a big extravaganza on Main Street. Check back to iBerkshires.com later for updates and more photos.

So some would argue golf might not be a sport, but how about an art form?? Wow, they really have just about everything to offer at MoCA this weekend.