"The Wonder Who?" was a pseudonym used by the popular American rock band, The Four Seasons, in the mid-1960s. Known for their doo-wop and rock 'n' roll style, the group used this alias to experiment with a more comedic and novelty sound, characterized by the falsetto lead vocals of Frankie Valli. Their most notable work under the "The Wonder Who?" name was a top-twenty cover of Bob Dylan's "Don't Think Twice, It's All Right." This endeavor allowed The Four Seasons to showcase their versatility and resulted in a distinctive chapter in their storied career.