Which instrument is known for sending messages to announce important events?

The talking drum is recognized for its unique ability to mimic the tonalities and rhythms of human speech, making it an effective instrument for communication. Traditionally used in various African cultures, the talking drum can convey messages over long distances, especially in settings where verbal communication might be difficult. It can announce important events such as ceremonies, gatherings, or significant community news, allowing people to receive information quickly and effectively.

The other instruments listed, while they may have their own cultural significance and uses, do not possess the same communicative capability as the talking drum. Guitars, pianos, and trumpets primarily serve musical purposes, whether in performances or accompaniment, without the specific role of message delivery that the talking drum fulfills.