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.
Zill Zills, also zils, or finger cymbals, (from Turkish "zil", "cymbals") are small metallic cymbals used in belly dancing and similar performances. They are called sājāt (صاجات) in Arabic. They are similar to Tibetan tingsha bells.