Exceptional live music was around every corner Sunday on the third and final day of the Solid Sound Festival at Mass MoCA. The Nels Kline Singers wowed fans with a thrashing set; Avi Buffalo left one satisfied concert-goer exiting the Hunter Center saying, "That's the best guitar playing I've seen this weekend."; and, of course, Jeff Tweedy and Wilco dropped the curtain.

Tweedy played a solo acoustic set at Joe's Field, then invited guest performers to join the stage, including Sir Richard Bishop, The Books' Nick Zammuto, Avi Buffalo, The Baseball Project's Scott McCaughey. The last few tunes were played by all of the members of Wilco, minus drummer Glenn Kotche.

Rain started falling during the last hour of Tweedy's performance, but that didn't keep fans from dancing and clapping along.

MoCA Executive Director Joe Thompson was in attendance during Tweedy's "Plus One" set, so check back later tonight for a full transcript of iBerkshires.com's interview with Thompson. He said that more than 5,000 fans attended Saturday's festivities, while more than 3,000 came back Sunday.