The sound of "Son of Three" has been described as "dark punk", and elsewhere as a "garage symphony of bubblegum grunge, woo-woo gurly harmonies and body-snatching sci-fi eeriness".
The sound of "Son of Three" has been described as "dark punk", and as having a prominent bass line. The song's sound has also been called a "garage symphony of bubblegum grunge, woo-woo gurly harmonies and body-snatching sci-fi eeriness".