 Nonetheless, mambo continued to enjoy some degree of popularity into the 1960s and new derivative styles appeared, such as dengue; by the 1970s it had been largely incorporated into salsa.The earliest roots of mambo can be traced to the "danzón de nuevo ritmo" (danzón with a new rhythm), later known as danzón-mambo, made popular by the orchestra Arcaño y sus Maravillas conducted by flautist Antonio Arcaño.Orestes López and his brother Israel López "Cachao", main composers of the Maravillas, were the first to denominate a final upbeat, improvised section of the popular Cuban danzón as a "mambo".