Jarv Is.. The group, which features Jarvis Cocker and additional members Serafina Steer, Emma Smith, Andrew McKinney, Jason Buckle and Adam Betts, release their sprawling, rhetorical-question-filled anthem 'Must I Evolve?'. It's a slow banger that builds and builds into a hypnotic and insistent gem. This is further proof that Jarvis can do no wrong.