an iron bar was bent into the shape of a triangle, and struck with an iron bar to create a singular clear tone; Wiri, which is a serrated piece of iron that is scraped down using a thin iron bar; Chapi, which is the metal end of a garden hoe and is struck with an iron bar to achieve a sharp high-pitched tone. The chapi, was an instrument born from the slave years in Curaçao but remains the most common used heru in contemporary Tambú to this day. Music Structure Deklarashon Introduktorio The prequel of a Tambú performance is known as the deklarashon introduktorio. This is an announcement of sought, where the pregon (lead singer), declares that a Tambú performance is about to begin and gathers the audience around. It is here where the tonal centre of the song is established, and a feeling of the basic melodic and rhythmic elements can be listened to by the audience and the musicians in preparation for the performance. The pregon will also announce the title or basic outline of the Tambú performance to the audience. Once this concludes, the Tambú performance begins. Tambú has maintained the basic binary structure of the performance that follows since its origins and consists of two sections: the habri (“open”) and será (“closed”). Habri Once the short deklarashon introduktorio concludes, the habri begins. The habri, is where the pregon coveys the main message of the performance. It is a customary rule that the audience and coro, remain silent during the habri. No dancing, clapping or other distractions are allowed, and the audience is expected to be paying undivided attention to the pregon. The pregon also must adhere to the melodic and rhythmic patterns set in the deklarashon introduktorio. Sera Following the habri the pregon will decide when the sera begins. The pregon will signal with a hand wave and a vocal call, that the sera has begun. In this part, the rhythms of the tambu and the heru become faster and more intense. The coro is used to support the pregon by repeating key messages of the song, and pushing the pregon to continue delivering the performance. The audience also plays a key role during the sera. In this section, the audience are free to participate through clapping (called brassa) or stomping (called pisotea). Hand clapping is used to accentuate the downbeat of the performance, adding further