Melodies are usually sampled. Older songs typically chopped up freestyle samples for the melody, or had none at all. Modern funk uses a set of samples from various sources, notably horn and accordion stabs, as well as the horn intro to the "Rocky" theme. Funk carioca has always used a small catalog of rhythms and samples that almost all songs take from (commonly with several in the same song). Funk carioca songs can either be instrumental or include rapping, singing, or something in between the two. Popularized by Brazilians and other Afro-Latino people, the saying "Bum-Cha-Cha, Bum Cha-Cha" , "Bum-Cha-Cha, Cha Cha" or even "Boom-Pop-Pop, Pop,Pop" is a representation of the beat that comes along in most funk songs.