Phoebe Bridgers re-recorded four songs from “Punisher” with arranger and string player Rob Moose for a new EP, “Copycat Killer.” It’s always fascinating to me to hear rock music melodies accompanied only or primarily by strings—there’s a sense, for me, of a song held together by a trick of engineering and tension, like a suspension bridge that has an impossibly long span and spare reinforcement. Hearing these songs with new arrangements reminds of the first time I heard the Ether Festival version of Radiohead’s “Arpeggi,” which sounded at first like it shouldn’t work, like it was done on a dare, but it did work—and that version is (probably) the better version of that song. The “Copycat Killer” versions of these songs are all wonderful (the new “Punisher” rivals the original)—and I think the best thing about them is the way they spotlight Bridgers’s vocals. “Kyoto,” one of my favorites from the album, is somehow both low-key and more dramatic on the EP. Bridgers makes it feel like the kind of song a Disney character would sing at the beginning of a movie about wanting to escape from the confines of their disappointing family and home life while gazing out at the ocean from high cliffs. The EP is a cool complement to “Punisher” and gives a different perspective on the songs from the album. It’s really enjoyable to hear artists play around with their own work—like the way Fiery Furnaces would wholesale rearrange songs when they played them live—and especially musicians like Bridgers, who seems to have a restless creativity that drives her to keep trying new things.