After a few weeks on the road, the String Cheese Incident and RatDog wrapped up their joint summer tour Saturday at Mansfield, MAs Tweeter Center. As an end of tour treat, both bands performed two sets, frequently collaborating throughout the evening as well. During String Cheese Incidents first set, Bob Weir emerged for both K.C. Moan and Dark Hollow. RatDog guitarist Mark Karan later emerged for Sweet Melinda and Turn on Your Lovelight, with Weir performing on the later number.

Collaborations continued during RatDogs tour closing performance. First, Michael Kang joined RatDog during its first set for Dark Star and She Says. Next, Kang returned during RatDogs second set with Bill Nershi for Silvio, Tequila, and West L.A. Fadeaway’ (Kyle Hollingsworth also joined on the final selection). The entire String Cheese Incident then emerged for Iko Iko. Shortly after, RatDogs set unfolded into a loose jam, with Kang helping the group close out its set with on point versions of Dark Star and Sugar Magnolia. Kang, Nershi and Hollingsworth also appeared during RatDogs encore, enhancing Ripple and, with the aid of percussionist Jason Hann, an appropriate tour closing rendition of One More Saturday Night.

RatDog and String Cheese Incidents performances at Radio City Music Hall Thursday and Friday were also peppered with collaborations. Of particular note, Weir and most of RatDog joined string Cheese Incident for I Know You Rider Friday. The Persuasions, a gospel vocal group who has toured with RatDog and recorded Dead covers, joined RatDog for The Liberty and an a capalla version of Black Muddy River. Infamous conservative spokesperson, and recently outed Deadhead, Ann Coulter could also be seen dancing side stage at Radio City Thursday night.