At Firefly Music Festival in June, while thousands of fans watched Of Monsters and Men perform a daytime set, a few people were focused on the skinny blond man in the front corner of the stage. He was interpreting the songs in American Sign Language for deaf festivalgoers. He translated the lyrics, “We crawl, we crawl on the ground,” from “Six Weeks,” with a snarling facial expression and slow, desperate clawing motions with his arms.
Further read at: https://noisey.vice.com/en_us/article/inside-the-world-of-concert-sign-language-interpreters