In our listening example you can hear each of these individual instruments separately as they join the large group. Listen to the basic one-two in the surdos that helps synchronize the marching and the syncopations and improvisations of the other instruments that fill every part of each bar with varied polyrhythms in an overwhelming loudness. The different timbres add more interest and the final result is a fantastic conglomerate of sounds. In this example only the bateria is provided. During the parade, all members of the schools of samba sing together in unison following the puxador, who plays the cavaquinho.