what musical percussion family instrument called zils was used with singing slogans?
Tambourine The tambourine is a musical instrument in the percussion family consisting of a frame, often of wood or plastic, with pairs of small metal jingles, called "zils". Classically the term tambourine denotes an instrument with a drumhead, though some variants may not have a head at all. Tambourines are often used with regular percussion sets. They can be mounted, for example on a stand as part of a drum kit (and played with drum sticks), or they can be held in the hands and played by tapping or hitting the instrument.
Bell pattern A bell pattern is a rhythmic pattern of striking a hand-held bell or other instrument of the Idiophone family, to make it emit a sound at desired intervals. It is often a "key pattern" (also known as a "guide pattern", "phrasing referent", "timeline", or "asymmetrical timeline"), in most cases it is a metal bell, such as an agogô, gankoqui, or cowbell, or a hollowed piece of wood, or wooden claves. In formal music, bell patterns are also played on the metal shell of the timbales, and drum kit cymbals.