In Brazil, shakers filled with different materials are called ganzás. They function like 'musical glue' connecting all instruments of the percussion ensemble. The fine and continuous pulse of the ganzá links the different sounds of tan-tan, rebolo, repique de mão and tamborim. It comes in handy at any occasion - on jam sessions on the beach, in a bar or at concerts on stage. The subtle and compact sound of the ganzá is also essential for Samba Reggae and small batucada groups, whereas in larger and louder Rio Samba groups the stronger and more penetrating sound of the rocar or chocalho are preferred.