"¿Qué escuchan ustedes?" would be "what do you listen to", using the plural sense of "you".
Ustedes escuchan
Escucha (usted) escuchan (ustedes) escuchas escucháis
"¿Qué escuchan los niños?" translates to "What do the children listen to?" in English.
It means,What are the children listening to?
It is ustedes or in Spain vosotros but mostly ustedes
Ustedes están bien -You all are good.
"Ustedes" means "you" in the plural, the polite form
ustedes significan todo para mi ustedes son mi mundo
you guys are intellectual
Vuestro means "your" but it's plural so it is different from tu
Ustedes son is the formal way of saying "You guys are.", "Or it was them"
I'm bored. And you?