 It follows the chord progression of Bm–G–D–A/C and Beyoncé's vocals span from the note of A3 to E5.Built on a bouncy beat, "Radio" is instrumentally complete with a Roland TR-808 drum, bass instruments, and synthesizers.Several music critics, including Ben Westhoff of "OC Weekly", noted that "Radio" bears resemblance to Rihanna's single "Umbrella" (2007) as they are both set to 1980s-style synthesizers."