The phrase comes from Brazilian party and DJ culture, where toca aquela means play that one and só voz signals that only the vocal should be heard. Clips built around short DJ callouts like this spread through soundboards, WhatsApp groups and short video edits because the line works without any context. DJs and editors keep reusing it as a transition cue, a way to demand a favourite track or to set up an a cappella moment before the beat returns.