Appalachian music is the music of the region of Appalachia in the Eastern United States. It is derived from various European and African influences, including English ballads, Irish and Scottish traditional music (especially fiddle music), hymns, and African-American blues. First recorded in the 1920s, Appalachian musicians were a key influence on the early development of Old-time music, country music, and bluegrass, and were an important part of the American folk music revival of the 1960s. Instruments typically used to perform Appalachian music include the banjo, American fiddle, fretted dulcimer, and guitar.