Conversation so far:
What was the folk revival?
CANNOTANSWER.
What is the most interesting thing in the article?
The word "bluegrass" first appeared around this time to describe the sound of Monroe and similar artists.
Were there other popular artists at the time?
and similar artists such as Flatt and Scruggs, the Stanley Brothers, Reno and Smiley, Jim and Jesse, and the Osborne Brothers.

Question: What time period was all this happening?
Self-contained rewrite: What time period was the revival happening?