Folk Rock is a genre that emerged in the mid-1960s, combining elements of folk music and rock and roll. It is characterized by the use of traditional acoustic instruments like guitars and mandolins, often blended with electric instruments, and lyrics that reflect social and political commentary. Notable bands in the genre include The Byrds, whose cover of Bob Dylan's "Mr. Tambourine Man" is often credited with launching the Folk Rock movement, and Simon & Garfunkel, known for their harmonious vocal style. This genre significantly influenced the development of the singer-songwriter tradition in popular music.