Bluegrass music was developed in the late 40's by Bill Monroe and his Bluegrass Boys, featuring Lester Flatt and Earl Scruggs who provided Bluegrass' hard driving sound. Bluegrass was a refinement of 'Old Timey' music which was a evolution of folk music brought by immigrants to the Appalachian mountains. As time went on songs that came from such countries as Ireland and Scotland became the basis of songs that were sung and played with instruments such as guitars, fiddles, and banjos. Eventually, new songs would be written in the manner of which we know as Bluegrass Music today.

Old-Timey Concert was created in 1967.

Bluegrass is a type of hay and Music

I think it's sort of old-timey. While all the new hip-hop and pop is more modern.

International Bluegrass Music Hall of Fame was created in 1991.