In pre-Hispanic times, musical expressions varied widely in each region; the "quena" and the "tinya" were two common instruments. Spaniards introduced new instruments, such as the guitar and the harp, which led to the development of crossbred instruments like the "charango". African contributions to Peruvian music include its rhythms and the "cajón", a percussion instrument. Peruvian folk dances include marinera, tondero, zamacueca, diablada and huayno. Peruvian music is dominated by the national instrument, the charango. The charango is member of the lute family of instruments and was invented during colonial times by musicians imitating the Spanish vihuela. In the Canas and Titicaca regions, the charango is used in courtship rituals, symbolically invoking mermaids with the instrument to lure the woman to the male performers. Until the 1960s, the charango was denigrated as an instrument of the rural poor. After the revolution in 1959, which built upon the Indigenismo movement (1910–1940), the charango was popularized among other performers. Variants include the walaycho, chillador, chinlili, and the larger and lower-tuned charangon. While the Spanish guitar is widely played, so too is the Spanish-in-origin bandurria. Unlike the guitar, it has been transformed by Peruvian players over the years, changing from a 12-string, 6-course instrument to one having 12 to 16 strings in a mere four courses. Violins and harps, also of European origin, are also played. While the Peruvian film industry has not been nearly as prolific as that of some other Latin American countries, some Peruvian movies produced enjoyed regional success. Historically, the cinema of Peru began in Iquitos in 1932 by Antonio Wong Rengifo (with a momentous, initial film billboard from 1900) because the rubber boom and the intense arrival of foreigners with technology to the city, and thus continued an extensive, unique filmography, with a different style than the films made in the capital, Lima. Peru also produced the first animated 3-D film in Latin America, "Piratas en el Callao". This film is set in the historical port city of Callao, which during colonial times had to defend itself against attacks by Dutch and British privateers seeking to undercut Spain's trade with its colonies. The film was produced by the Peruvian company Alpamayo Entertainment, which made a second 3-D film one year later: "Dragones: Destino de Fuego".