<Tr> <Td> 11 . </Td> <Td> "Arena Fight" </Td> <Td> 3: 32 </Td> </Tr> <Tr> <Td> 12 . </Td> <Td> "Where's the Sword?" </Td> <Td> 4: 33 </Td> </Tr> <Tr> <Td> 13 . </Td> <Td> "Go" </Td> <Td> 1: 43 </Td> </Tr> <Tr> <Td> 14 . </Td> <Td> "What Heroes Do" </Td> <Td> 1: 37 </Td> </Tr>

Who sings the song at the beginning of thor ragnarok