In the 1970s in jazz, jazz become increasingly influenced by Latin jazz, combining rhythms from African and Latin American countries, often played on instruments such as conga, timbale, güiro, and claves, with jazz and classical harmonies played on typical jazz instruments (piano, double bass, etc.). Artists such as Chick Corea, John McLaughlin and Al Di Meola increasingly influenced the genre with jazz fusion, a hybrid form of jazz-rock fusion which was developed by combining jazz improvisation with rock rhythms, electric instruments, and the highly amplified stage sound of rock musicians such as Jimi Hendrix. All Music Guide states that "..until around 1967, the worlds of jazz and rock were nearly completely separate." However, "...as rock became more creative and its musicianship improv