The music of Hawaiʻi inclues an array of traditional and popular styles, ranging from native Hawaiian folk music to modern rock and hip hop. Hawaiʻi's musical contributions to the music of the United States are out of proportion to the state's small size. Styles like slack-key guitar are well-known worldwide, while Hawaiian-tinged music is a frequent part of Hollywood soundtracks. Hawaiʻi also made a major contribution to country music with the introduction of the steel guitar.