 Complete the following phrase:  Hugh McIntyre of Forbes magazine said the song is as epic as it needed to be considering the two powerhouses attached. He noted that it features powerful vocals, high notes left and right and a vocal hook that is somehow impossible to sing along to, while still being memorable. McIntyre predicted it could be a potential Grammy Award nominee for a hrefBest20Pop20DuoGroup20PerformanceBest Pop DuoGroup Performancea, but, in fact, the songs producer Greg Kurstin won Producer of the Year at the 