Country rock is a subgenre of popular music, formed from the fusion of rock and country. It was developed by rock musicians who began to record country-flavored records in the late-1960s and early-1970s. These musicians recorded rock records using country themes, vocal styles, and additional instrumentation, most characteristically pedal steel guitars. Country rock began with artists like Bob Dylan, the Byrds, Nitty Gritty Dirt Band, the Flying Burrito Brothers, Gram Parsons and others, reaching its greatest popularity in the 1970s with artists such as Emmylou Harris, the Eagles, Linda Ronstadt, Michael Nesmith, Poco and Pure Prairie League. Country rock also influenced artists in other genres, including the Band, Grateful Dead, Creedence Clearwater Revival, the Rolling Stones, and George Harrison's solo work. It also played a part in the development of Southern rock.
So, with so many great alt country bands out there, who can be called the best alt country band? One of the widely recognized originators of alternative country music is Uncle Tupelo. Though the group no longer exists, they are considered one of the most important alternative country artists because of their derivative bands, Wilco and Son Volt, both of which are considered some of the best alternative country bands. Other widely acclaimed alt country bands include Ryan Adams, Drive-by Truckers, Steve Earle and Band of Horses.
By the end of World War II, "mountaineer" string band music known as bluegrass had emerged when Bill Monroe joined with Lester Flatt and Earl Scruggs, introduced by Roy Acuff at the Grand Ole Opry. That was the ordination of bluegrass music and how Bill Monroe became to be known as the "Father of Country Music." Gospel music, too, remained a popular component of bluegrass and other sorts of country music. Red Foley, the biggest country star following World War II, had one of the first million-selling gospel hits ("Peace in the Valley") and also sang boogie, blues and rockabilly. In the post-war period, country music was called "folk" in the trades, and "hillbilly" within the industry. In 1944, The Billboard replaced the term "hillbilly" with "folk songs and blues," and switched to "country" or "country and Western" in 1949. https://www.youtube.com/watch?v=hyNAvdnZ5Ec