Funk is an American musical style that originate in the mid- to late-1960s when African American musicians blended soul music, soul jazz and R&B into a rhythmic, danceable new form of music. Funk de-emphasizes melody and harmony, and brings a strong rhythmic groove of electric bass and drums to the foreground. Unlike R&B and soul songs, which had many chord changes, funk songs are often based on an extended vamp on a single chord.