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.