Conversation so far:
What happened during the folk revival for Bill Monroe?
Bill Monroe's fortunes began to improve during the folk revival of the early 1960s.
What was folk revival in music?
Many college students and other young people were beginning to discover Bill Monroe, associating his style more with traditional folk music
Did Bill Monroe and similar artists gain a bigger fanbase ?
Bill Monroe gradually expanded his reach beyond the traditional southern country music circuit.
Did Bill Monroe receive any awards?
Bill Monroe was inducted into the Country Music Hall of Fame in 1970, Nashville Songwriters Hall of Fame in 1971, and Rock and Roll Hall of Fame in 1997.
How long did folk revival in music last?
Folk revival faded in the mid-1960s.
Anything else you found interesting on Bill Monroe besides the folk revival, Country Music Hall of Fame, Nashville Songwriters Hall of Fame, and Rock and Roll Hall of Fame?
As the father of bluegrass, Bill Monroe was inducted into the International Bluegrass Music Hall of Honor in 1991. In 1993, he received the Grammy Lifetime Achievement Award.

Question: Why was he called that?
Self-contained rewrite: Why was Bill Monroe called the 'father of bluegrass'?