In Jamaica, the sounds of hip hop are derived from American and Jamaican influences. Jamaican hip hop is defined both through dancehall and reggae music. Jamaican Kool Herc brought the sound systems, technology, and techniques of reggae music to New York during the 1970s. Jamaican hip hop artists often rap in both Brooklyn and Jamaican accents. Jamaican hip hop subject matter is often influenced by outside and internal forces. Outside forces such as the bling-bling era of today's modern hip hop and internal influences coming from the use of anti-colonialism and marijuana or "ganja" references which Rastafarians believe bring them closer to God.