Newport Folk Festival goes down this weekend in Rhode Island, and both Courtney Barnett and Dinosaur Jr. are on the lineup. Yesterday, during Dinosaur Jr.’s set, the college-rock greats brought Barnett out to sing and play guitar on ’90s classic “Feel The Pain.” Both acts are still promoting some new-ish records: Last year, Dinosaur Jr. released Sweep It Into Space, and Barnett shared Things Take Time, Take Time. Likewise, they both recently put out documentaries; Barnett’s Anonymous Club came out in June, and Dinosaur Jr.’s Freakscene came out in May.