This wonderful image by @Kresblain depicts the meeting of two of the singers from Laugh Attack (here being played by two of the Walnut Gallery, Morey and Marshak) with one of the singers from The Beach Bears in the seventh round of Rock Band Wars.
Dipper is wearing a leisure suit and white platform shoes since in that round he was the lead singer for "Take A Chance". He looks exhausted from the weeks of work and being away from home.
While not directly referred to, this scene takes place during the chapter it is the cover illustration for.
Thanks, Kres. You are truly helping to bring this story to life. Be sure to tell him how much you like it.
