"Who Will Know" is a theme that plays during the introduction of Godzilla's atomic breath, midway through the film Shin Godzilla, and is featured on the soundtrack for the film. This theme is a mix of the themes "Who Will Know (24_Bigslow_strings)" and "Who Will Know (Tragedy)", taking the intro motif from the former piece and then transitioning into the Tragedy portion, with lyrics and a set of background vocalists.